From 4cd514ef83d153730be2d27bf1bdcdb5c76dddfc Mon Sep 17 00:00:00 2001
From: yoshi-automation <yoshi-automation@google.com>
Date: Tue, 6 Apr 2021 15:13:13 -0700
Subject: [PATCH] feat: support setting current_page to resume sessions; expose
 transition_route_groups in flows and language_code in webhook

PiperOrigin-RevId: 367042726

Source-Author: Google APIs <noreply@google.com>
Source-Date: Tue Apr 6 11:04:50 2021 -0700
Source-Repo: googleapis/googleapis
Source-Sha: 163ed6c0450949662bf2e6997eb7e0782cd4d800
Source-Link: https://github.com/googleapis/googleapis/commit/163ed6c0450949662bf2e6997eb7e0782cd4d800
---
 .../dialogflow/cx/v3/FlowsClientTest.java     |   5 +
 .../google/cloud/dialogflow/cx/v3/Flow.java   | 391 ++++++++++++++++++
 .../cloud/dialogflow/cx/v3/FlowOrBuilder.java |  83 ++++
 .../cloud/dialogflow/cx/v3/FlowProto.java     | 171 ++++----
 .../google/cloud/dialogflow/cx/v3/Intent.java |  72 ++--
 .../dialogflow/cx/v3/IntentOrBuilder.java     |  28 +-
 .../cloud/dialogflow/cx/v3/IntentProto.java   | 136 +++---
 .../dialogflow/cx/v3/QueryParameters.java     | 242 +++++++++++
 .../cx/v3/QueryParametersOrBuilder.java       |  43 ++
 .../cloud/dialogflow/cx/v3/SessionProto.java  | 234 +++++------
 .../cloud/dialogflow/cx/v3/WebhookProto.java  | 200 ++++-----
 .../dialogflow/cx/v3/WebhookRequest.java      | 186 +++++++++
 .../cx/v3/WebhookRequestOrBuilder.java        |  27 ++
 .../google/cloud/dialogflow/cx/v3/flow.proto  |  14 +
 .../cloud/dialogflow/cx/v3/intent.proto       |   8 +-
 .../cloud/dialogflow/cx/v3/session.proto      |  15 +
 .../cloud/dialogflow/cx/v3/webhook.proto      |   4 +
 synth.metadata                                |  10 +-
 18 files changed, 1443 insertions(+), 426 deletions(-)

diff --git a/google-cloud-dialogflow-cx/src/test/java/com/google/cloud/dialogflow/cx/v3/FlowsClientTest.java b/google-cloud-dialogflow-cx/src/test/java/com/google/cloud/dialogflow/cx/v3/FlowsClientTest.java
index 1436fff40..1d53b0877 100644
--- a/google-cloud-dialogflow-cx/src/test/java/com/google/cloud/dialogflow/cx/v3/FlowsClientTest.java
+++ b/google-cloud-dialogflow-cx/src/test/java/com/google/cloud/dialogflow/cx/v3/FlowsClientTest.java
@@ -95,6 +95,7 @@ public void createFlowTest() throws Exception {
             .setDescription("description-1724546052")
             .addAllTransitionRoutes(new ArrayList<TransitionRoute>())
             .addAllEventHandlers(new ArrayList<EventHandler>())
+            .addAllTransitionRouteGroups(new ArrayList<String>())
             .setNluSettings(NluSettings.newBuilder().build())
             .build();
     mockFlows.addResponse(expectedResponse);
@@ -141,6 +142,7 @@ public void createFlowTest2() throws Exception {
             .setDescription("description-1724546052")
             .addAllTransitionRoutes(new ArrayList<TransitionRoute>())
             .addAllEventHandlers(new ArrayList<EventHandler>())
+            .addAllTransitionRouteGroups(new ArrayList<String>())
             .setNluSettings(NluSettings.newBuilder().build())
             .build();
     mockFlows.addResponse(expectedResponse);
@@ -343,6 +345,7 @@ public void getFlowTest() throws Exception {
             .setDescription("description-1724546052")
             .addAllTransitionRoutes(new ArrayList<TransitionRoute>())
             .addAllEventHandlers(new ArrayList<EventHandler>())
+            .addAllTransitionRouteGroups(new ArrayList<String>())
             .setNluSettings(NluSettings.newBuilder().build())
             .build();
     mockFlows.addResponse(expectedResponse);
@@ -386,6 +389,7 @@ public void getFlowTest2() throws Exception {
             .setDescription("description-1724546052")
             .addAllTransitionRoutes(new ArrayList<TransitionRoute>())
             .addAllEventHandlers(new ArrayList<EventHandler>())
+            .addAllTransitionRouteGroups(new ArrayList<String>())
             .setNluSettings(NluSettings.newBuilder().build())
             .build();
     mockFlows.addResponse(expectedResponse);
@@ -429,6 +433,7 @@ public void updateFlowTest() throws Exception {
             .setDescription("description-1724546052")
             .addAllTransitionRoutes(new ArrayList<TransitionRoute>())
             .addAllEventHandlers(new ArrayList<EventHandler>())
+            .addAllTransitionRouteGroups(new ArrayList<String>())
             .setNluSettings(NluSettings.newBuilder().build())
             .build();
     mockFlows.addResponse(expectedResponse);
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Flow.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Flow.java
index 4f0e7e6c5..e143ee73c 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Flow.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Flow.java
@@ -54,6 +54,7 @@ private Flow() {
     description_ = "";
     transitionRoutes_ = java.util.Collections.emptyList();
     eventHandlers_ = java.util.Collections.emptyList();
+    transitionRouteGroups_ = com.google.protobuf.LazyStringArrayList.EMPTY;
   }
 
   @java.lang.Override
@@ -146,6 +147,16 @@ private Flow(
                 nluSettings_ = subBuilder.buildPartial();
               }
 
+              break;
+            }
+          case 122:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+              if (!((mutable_bitField0_ & 0x00000004) != 0)) {
+                transitionRouteGroups_ = new com.google.protobuf.LazyStringArrayList();
+                mutable_bitField0_ |= 0x00000004;
+              }
+              transitionRouteGroups_.add(s);
               break;
             }
           default:
@@ -168,6 +179,9 @@ private Flow(
       if (((mutable_bitField0_ & 0x00000002) != 0)) {
         eventHandlers_ = java.util.Collections.unmodifiableList(eventHandlers_);
       }
+      if (((mutable_bitField0_ & 0x00000004) != 0)) {
+        transitionRouteGroups_ = transitionRouteGroups_.getUnmodifiableView();
+      }
       this.unknownFields = unknownFields.build();
       makeExtensionsImmutable();
     }
@@ -582,6 +596,99 @@ public com.google.cloud.dialogflow.cx.v3.EventHandlerOrBuilder getEventHandlersO
     return eventHandlers_.get(index);
   }
 
+  public static final int TRANSITION_ROUTE_GROUPS_FIELD_NUMBER = 15;
+  private com.google.protobuf.LazyStringList transitionRouteGroups_;
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return A list containing the transitionRouteGroups.
+   */
+  public com.google.protobuf.ProtocolStringList getTransitionRouteGroupsList() {
+    return transitionRouteGroups_;
+  }
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The count of transitionRouteGroups.
+   */
+  public int getTransitionRouteGroupsCount() {
+    return transitionRouteGroups_.size();
+  }
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the element to return.
+   * @return The transitionRouteGroups at the given index.
+   */
+  public java.lang.String getTransitionRouteGroups(int index) {
+    return transitionRouteGroups_.get(index);
+  }
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the value to return.
+   * @return The bytes of the transitionRouteGroups at the given index.
+   */
+  public com.google.protobuf.ByteString getTransitionRouteGroupsBytes(int index) {
+    return transitionRouteGroups_.getByteString(index);
+  }
+
   public static final int NLU_SETTINGS_FIELD_NUMBER = 11;
   private com.google.cloud.dialogflow.cx.v3.NluSettings nluSettings_;
   /**
@@ -662,6 +769,10 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (nluSettings_ != null) {
       output.writeMessage(11, getNluSettings());
     }
+    for (int i = 0; i < transitionRouteGroups_.size(); i++) {
+      com.google.protobuf.GeneratedMessageV3.writeString(
+          output, 15, transitionRouteGroups_.getRaw(i));
+    }
     unknownFields.writeTo(output);
   }
 
@@ -689,6 +800,14 @@ public int getSerializedSize() {
     if (nluSettings_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(11, getNluSettings());
     }
+    {
+      int dataSize = 0;
+      for (int i = 0; i < transitionRouteGroups_.size(); i++) {
+        dataSize += computeStringSizeNoTag(transitionRouteGroups_.getRaw(i));
+      }
+      size += dataSize;
+      size += 1 * getTransitionRouteGroupsList().size();
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -709,6 +828,7 @@ public boolean equals(final java.lang.Object obj) {
     if (!getDescription().equals(other.getDescription())) return false;
     if (!getTransitionRoutesList().equals(other.getTransitionRoutesList())) return false;
     if (!getEventHandlersList().equals(other.getEventHandlersList())) return false;
+    if (!getTransitionRouteGroupsList().equals(other.getTransitionRouteGroupsList())) return false;
     if (hasNluSettings() != other.hasNluSettings()) return false;
     if (hasNluSettings()) {
       if (!getNluSettings().equals(other.getNluSettings())) return false;
@@ -738,6 +858,10 @@ public int hashCode() {
       hash = (37 * hash) + EVENT_HANDLERS_FIELD_NUMBER;
       hash = (53 * hash) + getEventHandlersList().hashCode();
     }
+    if (getTransitionRouteGroupsCount() > 0) {
+      hash = (37 * hash) + TRANSITION_ROUTE_GROUPS_FIELD_NUMBER;
+      hash = (53 * hash) + getTransitionRouteGroupsList().hashCode();
+    }
     if (hasNluSettings()) {
       hash = (37 * hash) + NLU_SETTINGS_FIELD_NUMBER;
       hash = (53 * hash) + getNluSettings().hashCode();
@@ -919,6 +1043,8 @@ public Builder clear() {
       } else {
         eventHandlersBuilder_.clear();
       }
+      transitionRouteGroups_ = com.google.protobuf.LazyStringArrayList.EMPTY;
+      bitField0_ = (bitField0_ & ~0x00000004);
       if (nluSettingsBuilder_ == null) {
         nluSettings_ = null;
       } else {
@@ -974,6 +1100,11 @@ public com.google.cloud.dialogflow.cx.v3.Flow buildPartial() {
       } else {
         result.eventHandlers_ = eventHandlersBuilder_.build();
       }
+      if (((bitField0_ & 0x00000004) != 0)) {
+        transitionRouteGroups_ = transitionRouteGroups_.getUnmodifiableView();
+        bitField0_ = (bitField0_ & ~0x00000004);
+      }
+      result.transitionRouteGroups_ = transitionRouteGroups_;
       if (nluSettingsBuilder_ == null) {
         result.nluSettings_ = nluSettings_;
       } else {
@@ -1094,6 +1225,16 @@ public Builder mergeFrom(com.google.cloud.dialogflow.cx.v3.Flow other) {
           }
         }
       }
+      if (!other.transitionRouteGroups_.isEmpty()) {
+        if (transitionRouteGroups_.isEmpty()) {
+          transitionRouteGroups_ = other.transitionRouteGroups_;
+          bitField0_ = (bitField0_ & ~0x00000004);
+        } else {
+          ensureTransitionRouteGroupsIsMutable();
+          transitionRouteGroups_.addAll(other.transitionRouteGroups_);
+        }
+        onChanged();
+      }
       if (other.hasNluSettings()) {
         mergeNluSettings(other.getNluSettings());
       }
@@ -2542,6 +2683,256 @@ public com.google.cloud.dialogflow.cx.v3.EventHandler.Builder addEventHandlersBu
       return eventHandlersBuilder_;
     }
 
+    private com.google.protobuf.LazyStringList transitionRouteGroups_ =
+        com.google.protobuf.LazyStringArrayList.EMPTY;
+
+    private void ensureTransitionRouteGroupsIsMutable() {
+      if (!((bitField0_ & 0x00000004) != 0)) {
+        transitionRouteGroups_ =
+            new com.google.protobuf.LazyStringArrayList(transitionRouteGroups_);
+        bitField0_ |= 0x00000004;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return A list containing the transitionRouteGroups.
+     */
+    public com.google.protobuf.ProtocolStringList getTransitionRouteGroupsList() {
+      return transitionRouteGroups_.getUnmodifiableView();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return The count of transitionRouteGroups.
+     */
+    public int getTransitionRouteGroupsCount() {
+      return transitionRouteGroups_.size();
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param index The index of the element to return.
+     * @return The transitionRouteGroups at the given index.
+     */
+    public java.lang.String getTransitionRouteGroups(int index) {
+      return transitionRouteGroups_.get(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param index The index of the value to return.
+     * @return The bytes of the transitionRouteGroups at the given index.
+     */
+    public com.google.protobuf.ByteString getTransitionRouteGroupsBytes(int index) {
+      return transitionRouteGroups_.getByteString(index);
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param index The index to set the value at.
+     * @param value The transitionRouteGroups to set.
+     * @return This builder for chaining.
+     */
+    public Builder setTransitionRouteGroups(int index, java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      ensureTransitionRouteGroupsIsMutable();
+      transitionRouteGroups_.set(index, value);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The transitionRouteGroups to add.
+     * @return This builder for chaining.
+     */
+    public Builder addTransitionRouteGroups(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      ensureTransitionRouteGroupsIsMutable();
+      transitionRouteGroups_.add(value);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param values The transitionRouteGroups to add.
+     * @return This builder for chaining.
+     */
+    public Builder addAllTransitionRouteGroups(java.lang.Iterable<java.lang.String> values) {
+      ensureTransitionRouteGroupsIsMutable();
+      com.google.protobuf.AbstractMessageLite.Builder.addAll(values, transitionRouteGroups_);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearTransitionRouteGroups() {
+      transitionRouteGroups_ = com.google.protobuf.LazyStringArrayList.EMPTY;
+      bitField0_ = (bitField0_ & ~0x00000004);
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * A flow's transition route group serve two purposes:
+     * *   They are responsible for matching the user's first utterances in the
+     * flow.
+     * *   They are inherited by every page's [transition
+     * route groups][Page.transition_route_groups]. Transition route groups
+     * defined in the page have higher priority than those defined in the flow.
+     * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+     * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+     * </pre>
+     *
+     * <code>
+     * repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+     * </code>
+     *
+     * @param value The bytes of the transitionRouteGroups to add.
+     * @return This builder for chaining.
+     */
+    public Builder addTransitionRouteGroupsBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+      ensureTransitionRouteGroupsIsMutable();
+      transitionRouteGroups_.add(value);
+      onChanged();
+      return this;
+    }
+
     private com.google.cloud.dialogflow.cx.v3.NluSettings nluSettings_;
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.cloud.dialogflow.cx.v3.NluSettings,
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowOrBuilder.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowOrBuilder.java
index bcec815d1..991154d04 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowOrBuilder.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowOrBuilder.java
@@ -309,6 +309,89 @@ com.google.cloud.dialogflow.cx.v3.TransitionRouteOrBuilder getTransitionRoutesOr
    */
   com.google.cloud.dialogflow.cx.v3.EventHandlerOrBuilder getEventHandlersOrBuilder(int index);
 
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return A list containing the transitionRouteGroups.
+   */
+  java.util.List<java.lang.String> getTransitionRouteGroupsList();
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @return The count of transitionRouteGroups.
+   */
+  int getTransitionRouteGroupsCount();
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the element to return.
+   * @return The transitionRouteGroups at the given index.
+   */
+  java.lang.String getTransitionRouteGroups(int index);
+  /**
+   *
+   *
+   * <pre>
+   * A flow's transition route group serve two purposes:
+   * *   They are responsible for matching the user's first utterances in the
+   * flow.
+   * *   They are inherited by every page's [transition
+   * route groups][Page.transition_route_groups]. Transition route groups
+   * defined in the page have higher priority than those defined in the flow.
+   * Format:`projects/&lt;Project ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent
+   * ID&gt;/flows/&lt;Flow ID&gt;/transitionRouteGroups/&lt;TransitionRouteGroup ID&gt;`.
+   * </pre>
+   *
+   * <code>repeated string transition_route_groups = 15 [(.google.api.resource_reference) = { ... }
+   * </code>
+   *
+   * @param index The index of the value to return.
+   * @return The bytes of the transitionRouteGroups at the given index.
+   */
+  com.google.protobuf.ByteString getTransitionRouteGroupsBytes(int index);
+
   /**
    *
    *
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowProto.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowProto.java
index a1aa60f19..bcbd58db8 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowProto.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/FlowProto.java
@@ -105,95 +105,97 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "CED\020\003\"{\n\021ModelTrainingMode\022#\n\037MODEL_TRAI"
           + "NING_MODE_UNSPECIFIED\020\000\022!\n\035MODEL_TRAININ"
           + "G_MODE_AUTOMATIC\020\001\022\036\n\032MODEL_TRAINING_MOD"
-          + "E_MANUAL\020\002\"\200\003\n\004Flow\022\014\n\004name\030\001 \001(\t\022\031\n\014dis"
+          + "E_MANUAL\020\002\"\326\003\n\004Flow\022\014\n\004name\030\001 \001(\t\022\031\n\014dis"
           + "play_name\030\002 \001(\tB\003\340A\002\022\023\n\013description\030\003 \001("
           + "\t\022I\n\021transition_routes\030\004 \003(\0132..google.cl"
           + "oud.dialogflow.cx.v3.TransitionRoute\022C\n\016"
           + "event_handlers\030\n \003(\0132+.google.cloud.dial"
-          + "ogflow.cx.v3.EventHandler\022@\n\014nlu_setting"
-          + "s\030\013 \001(\0132*.google.cloud.dialogflow.cx.v3."
-          + "NluSettings:h\352Ae\n\036dialogflow.googleapis."
-          + "com/Flow\022Cprojects/{project}/locations/{"
-          + "location}/agents/{agent}/flows/{flow}\"\232\001"
-          + "\n\021CreateFlowRequest\0226\n\006parent\030\001 \001(\tB&\340A\002"
-          + "\372A \022\036dialogflow.googleapis.com/Flow\0226\n\004f"
-          + "low\030\002 \001(\0132#.google.cloud.dialogflow.cx.v"
-          + "3.FlowB\003\340A\002\022\025\n\rlanguage_code\030\003 \001(\t\"X\n\021De"
-          + "leteFlowRequest\0224\n\004name\030\001 \001(\tB&\340A\002\372A \n\036d"
-          + "ialogflow.googleapis.com/Flow\022\r\n\005force\030\002"
-          + " \001(\010\"\210\001\n\020ListFlowsRequest\0226\n\006parent\030\001 \001("
-          + "\tB&\340A\002\372A \022\036dialogflow.googleapis.com/Flo"
-          + "w\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_token\030\003 \001(\t"
-          + "\022\025\n\rlanguage_code\030\004 \001(\t\"`\n\021ListFlowsResp"
-          + "onse\0222\n\005flows\030\001 \003(\0132#.google.cloud.dialo"
-          + "gflow.cx.v3.Flow\022\027\n\017next_page_token\030\002 \001("
-          + "\t\"]\n\016GetFlowRequest\0224\n\004name\030\001 \001(\tB&\340A\002\372A"
-          + " \n\036dialogflow.googleapis.com/Flow\022\025\n\rlan"
-          + "guage_code\030\002 \001(\t\"\230\001\n\021UpdateFlowRequest\0226"
-          + "\n\004flow\030\001 \001(\0132#.google.cloud.dialogflow.c"
-          + "x.v3.FlowB\003\340A\002\0224\n\013update_mask\030\002 \001(\0132\032.go"
-          + "ogle.protobuf.FieldMaskB\003\340A\002\022\025\n\rlanguage"
-          + "_code\030\003 \001(\t\"H\n\020TrainFlowRequest\0224\n\004name\030"
-          + "\001 \001(\tB&\340A\002\372A \n\036dialogflow.googleapis.com"
-          + "/Flow\"b\n\023ValidateFlowRequest\0224\n\004name\030\001 \001"
-          + "(\tB&\340A\002\372A \n\036dialogflow.googleapis.com/Fl"
-          + "ow\022\025\n\rlanguage_code\030\002 \001(\t\"}\n\036GetFlowVali"
-          + "dationResultRequest\022D\n\004name\030\001 \001(\tB6\340A\002\372A"
-          + "0\n.dialogflow.googleapis.com/FlowValidat"
-          + "ionResult\022\025\n\rlanguage_code\030\002 \001(\t\"\261\002\n\024Flo"
-          + "wValidationResult\022\014\n\004name\030\001 \001(\t\022M\n\023valid"
-          + "ation_messages\030\002 \003(\01320.google.cloud.dial"
-          + "ogflow.cx.v3.ValidationMessage\022/\n\013update"
-          + "_time\030\003 \001(\0132\032.google.protobuf.Timestamp:"
-          + "\212\001\352A\206\001\n.dialogflow.googleapis.com/FlowVa"
-          + "lidationResult\022Tprojects/{project}/locat"
+          + "ogflow.cx.v3.EventHandler\022T\n\027transition_"
+          + "route_groups\030\017 \003(\tB3\372A0\n.dialogflow.goog"
+          + "leapis.com/TransitionRouteGroup\022@\n\014nlu_s"
+          + "ettings\030\013 \001(\0132*.google.cloud.dialogflow."
+          + "cx.v3.NluSettings:h\352Ae\n\036dialogflow.googl"
+          + "eapis.com/Flow\022Cprojects/{project}/locat"
           + "ions/{location}/agents/{agent}/flows/{fl"
-          + "ow}/validationResult2\356\014\n\005Flows\022\263\001\n\nCreat"
-          + "eFlow\0220.google.cloud.dialogflow.cx.v3.Cr"
-          + "eateFlowRequest\032#.google.cloud.dialogflo"
-          + "w.cx.v3.Flow\"N\202\323\344\223\002:\"2/v3/{parent=projec"
-          + "ts/*/locations/*/agents/*}/flows:\004flow\332A"
-          + "\013parent,flow\022\231\001\n\nDeleteFlow\0220.google.clo"
-          + "ud.dialogflow.cx.v3.DeleteFlowRequest\032\026."
-          + "google.protobuf.Empty\"A\202\323\344\223\0024*2/v3/{name"
-          + "=projects/*/locations/*/agents/*/flows/*"
-          + "}\332A\004name\022\263\001\n\tListFlows\022/.google.cloud.di"
-          + "alogflow.cx.v3.ListFlowsRequest\0320.google"
-          + ".cloud.dialogflow.cx.v3.ListFlowsRespons"
-          + "e\"C\202\323\344\223\0024\0222/v3/{parent=projects/*/locati"
-          + "ons/*/agents/*}/flows\332A\006parent\022\240\001\n\007GetFl"
-          + "ow\022-.google.cloud.dialogflow.cx.v3.GetFl"
-          + "owRequest\032#.google.cloud.dialogflow.cx.v"
-          + "3.Flow\"A\202\323\344\223\0024\0222/v3/{name=projects/*/loc"
-          + "ations/*/agents/*/flows/*}\332A\004name\022\275\001\n\nUp"
-          + "dateFlow\0220.google.cloud.dialogflow.cx.v3"
-          + ".UpdateFlowRequest\032#.google.cloud.dialog"
-          + "flow.cx.v3.Flow\"X\202\323\344\223\002?27/v3/{flow.name="
-          + "projects/*/locations/*/agents/*/flows/*}"
-          + ":\004flow\332A\020flow,update_mask\022\331\001\n\tTrainFlow\022"
-          + "/.google.cloud.dialogflow.cx.v3.TrainFlo"
-          + "wRequest\032\035.google.longrunning.Operation\""
-          + "|\202\323\344\223\002=\"8/v3/{name=projects/*/locations/"
-          + "*/agents/*/flows/*}:train:\001*\332A\004name\312A/\n\025"
-          + "google.protobuf.Empty\022\026google.protobuf.S"
-          + "truct\022\277\001\n\014ValidateFlow\0222.google.cloud.di"
-          + "alogflow.cx.v3.ValidateFlowRequest\0323.goo"
-          + "gle.cloud.dialogflow.cx.v3.FlowValidatio"
-          + "nResult\"F\202\323\344\223\002@\";/v3/{name=projects/*/lo"
-          + "cations/*/agents/*/flows/*}:validate:\001*\022"
-          + "\341\001\n\027GetFlowValidationResult\022=.google.clo"
-          + "ud.dialogflow.cx.v3.GetFlowValidationRes"
-          + "ultRequest\0323.google.cloud.dialogflow.cx."
-          + "v3.FlowValidationResult\"R\202\323\344\223\002E\022C/v3/{na"
-          + "me=projects/*/locations/*/agents/*/flows"
-          + "/*/validationResult}\332A\004name\032x\312A\031dialogfl"
-          + "ow.googleapis.com\322AYhttps://www.googleap"
-          + "is.com/auth/cloud-platform,https://www.g"
-          + "oogleapis.com/auth/dialogflowB\231\001\n!com.go"
-          + "ogle.cloud.dialogflow.cx.v3B\tFlowProtoP\001"
-          + "Z?google.golang.org/genproto/googleapis/"
-          + "cloud/dialogflow/cx/v3;cx\370\001\001\242\002\002DF\252\002\035Goog"
-          + "le.Cloud.Dialogflow.Cx.V3b\006proto3"
+          + "ow}\"\232\001\n\021CreateFlowRequest\0226\n\006parent\030\001 \001("
+          + "\tB&\340A\002\372A \022\036dialogflow.googleapis.com/Flo"
+          + "w\0226\n\004flow\030\002 \001(\0132#.google.cloud.dialogflo"
+          + "w.cx.v3.FlowB\003\340A\002\022\025\n\rlanguage_code\030\003 \001(\t"
+          + "\"X\n\021DeleteFlowRequest\0224\n\004name\030\001 \001(\tB&\340A\002"
+          + "\372A \n\036dialogflow.googleapis.com/Flow\022\r\n\005f"
+          + "orce\030\002 \001(\010\"\210\001\n\020ListFlowsRequest\0226\n\006paren"
+          + "t\030\001 \001(\tB&\340A\002\372A \022\036dialogflow.googleapis.c"
+          + "om/Flow\022\021\n\tpage_size\030\002 \001(\005\022\022\n\npage_token"
+          + "\030\003 \001(\t\022\025\n\rlanguage_code\030\004 \001(\t\"`\n\021ListFlo"
+          + "wsResponse\0222\n\005flows\030\001 \003(\0132#.google.cloud"
+          + ".dialogflow.cx.v3.Flow\022\027\n\017next_page_toke"
+          + "n\030\002 \001(\t\"]\n\016GetFlowRequest\0224\n\004name\030\001 \001(\tB"
+          + "&\340A\002\372A \n\036dialogflow.googleapis.com/Flow\022"
+          + "\025\n\rlanguage_code\030\002 \001(\t\"\230\001\n\021UpdateFlowReq"
+          + "uest\0226\n\004flow\030\001 \001(\0132#.google.cloud.dialog"
+          + "flow.cx.v3.FlowB\003\340A\002\0224\n\013update_mask\030\002 \001("
+          + "\0132\032.google.protobuf.FieldMaskB\003\340A\002\022\025\n\rla"
+          + "nguage_code\030\003 \001(\t\"H\n\020TrainFlowRequest\0224\n"
+          + "\004name\030\001 \001(\tB&\340A\002\372A \n\036dialogflow.googleap"
+          + "is.com/Flow\"b\n\023ValidateFlowRequest\0224\n\004na"
+          + "me\030\001 \001(\tB&\340A\002\372A \n\036dialogflow.googleapis."
+          + "com/Flow\022\025\n\rlanguage_code\030\002 \001(\t\"}\n\036GetFl"
+          + "owValidationResultRequest\022D\n\004name\030\001 \001(\tB"
+          + "6\340A\002\372A0\n.dialogflow.googleapis.com/FlowV"
+          + "alidationResult\022\025\n\rlanguage_code\030\002 \001(\t\"\261"
+          + "\002\n\024FlowValidationResult\022\014\n\004name\030\001 \001(\t\022M\n"
+          + "\023validation_messages\030\002 \003(\01320.google.clou"
+          + "d.dialogflow.cx.v3.ValidationMessage\022/\n\013"
+          + "update_time\030\003 \001(\0132\032.google.protobuf.Time"
+          + "stamp:\212\001\352A\206\001\n.dialogflow.googleapis.com/"
+          + "FlowValidationResult\022Tprojects/{project}"
+          + "/locations/{location}/agents/{agent}/flo"
+          + "ws/{flow}/validationResult2\356\014\n\005Flows\022\263\001\n"
+          + "\nCreateFlow\0220.google.cloud.dialogflow.cx"
+          + ".v3.CreateFlowRequest\032#.google.cloud.dia"
+          + "logflow.cx.v3.Flow\"N\202\323\344\223\002:\"2/v3/{parent="
+          + "projects/*/locations/*/agents/*}/flows:\004"
+          + "flow\332A\013parent,flow\022\231\001\n\nDeleteFlow\0220.goog"
+          + "le.cloud.dialogflow.cx.v3.DeleteFlowRequ"
+          + "est\032\026.google.protobuf.Empty\"A\202\323\344\223\0024*2/v3"
+          + "/{name=projects/*/locations/*/agents/*/f"
+          + "lows/*}\332A\004name\022\263\001\n\tListFlows\022/.google.cl"
+          + "oud.dialogflow.cx.v3.ListFlowsRequest\0320."
+          + "google.cloud.dialogflow.cx.v3.ListFlowsR"
+          + "esponse\"C\202\323\344\223\0024\0222/v3/{parent=projects/*/"
+          + "locations/*/agents/*}/flows\332A\006parent\022\240\001\n"
+          + "\007GetFlow\022-.google.cloud.dialogflow.cx.v3"
+          + ".GetFlowRequest\032#.google.cloud.dialogflo"
+          + "w.cx.v3.Flow\"A\202\323\344\223\0024\0222/v3/{name=projects"
+          + "/*/locations/*/agents/*/flows/*}\332A\004name\022"
+          + "\275\001\n\nUpdateFlow\0220.google.cloud.dialogflow"
+          + ".cx.v3.UpdateFlowRequest\032#.google.cloud."
+          + "dialogflow.cx.v3.Flow\"X\202\323\344\223\002?27/v3/{flow"
+          + ".name=projects/*/locations/*/agents/*/fl"
+          + "ows/*}:\004flow\332A\020flow,update_mask\022\331\001\n\tTrai"
+          + "nFlow\022/.google.cloud.dialogflow.cx.v3.Tr"
+          + "ainFlowRequest\032\035.google.longrunning.Oper"
+          + "ation\"|\202\323\344\223\002=\"8/v3/{name=projects/*/loca"
+          + "tions/*/agents/*/flows/*}:train:\001*\332A\004nam"
+          + "e\312A/\n\025google.protobuf.Empty\022\026google.prot"
+          + "obuf.Struct\022\277\001\n\014ValidateFlow\0222.google.cl"
+          + "oud.dialogflow.cx.v3.ValidateFlowRequest"
+          + "\0323.google.cloud.dialogflow.cx.v3.FlowVal"
+          + "idationResult\"F\202\323\344\223\002@\";/v3/{name=project"
+          + "s/*/locations/*/agents/*/flows/*}:valida"
+          + "te:\001*\022\341\001\n\027GetFlowValidationResult\022=.goog"
+          + "le.cloud.dialogflow.cx.v3.GetFlowValidat"
+          + "ionResultRequest\0323.google.cloud.dialogfl"
+          + "ow.cx.v3.FlowValidationResult\"R\202\323\344\223\002E\022C/"
+          + "v3/{name=projects/*/locations/*/agents/*"
+          + "/flows/*/validationResult}\332A\004name\032x\312A\031di"
+          + "alogflow.googleapis.com\322AYhttps://www.go"
+          + "ogleapis.com/auth/cloud-platform,https:/"
+          + "/www.googleapis.com/auth/dialogflowB\231\001\n!"
+          + "com.google.cloud.dialogflow.cx.v3B\tFlowP"
+          + "rotoP\001Z?google.golang.org/genproto/googl"
+          + "eapis/cloud/dialogflow/cx/v3;cx\370\001\001\242\002\002DF\252"
+          + "\002\035Google.Cloud.Dialogflow.Cx.V3b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -229,6 +231,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "Description",
               "TransitionRoutes",
               "EventHandlers",
+              "TransitionRouteGroups",
               "NluSettings",
             });
     internal_static_google_cloud_dialogflow_cx_v3_CreateFlowRequest_descriptor =
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Intent.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Intent.java
index e24505e05..905f5d549 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Intent.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/Intent.java
@@ -4300,7 +4300,7 @@ public int getLabelsCount() {
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -4313,7 +4313,7 @@ public int getLabelsCount() {
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   @java.lang.Override
   public boolean containsLabels(java.lang.String key) {
@@ -4332,7 +4332,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabels() {
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -4345,7 +4345,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabels() {
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   @java.lang.Override
   public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
@@ -4355,7 +4355,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -4368,7 +4368,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   @java.lang.Override
   public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.String defaultValue) {
@@ -4382,7 +4382,7 @@ public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.Strin
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -4395,7 +4395,7 @@ public java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.Strin
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   @java.lang.Override
   public java.lang.String getLabelsOrThrow(java.lang.String key) {
@@ -4415,11 +4415,11 @@ public java.lang.String getLabelsOrThrow(java.lang.String key) {
    *
    *
    * <pre>
-   * Optional. Human readable description for better understanding an intent like its
+   * Human readable description for better understanding an intent like its
    * scope, content, result etc. Maximum character limit: 140 characters.
    * </pre>
    *
-   * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>string description = 8;</code>
    *
    * @return The description.
    */
@@ -4439,11 +4439,11 @@ public java.lang.String getDescription() {
    *
    *
    * <pre>
-   * Optional. Human readable description for better understanding an intent like its
+   * Human readable description for better understanding an intent like its
    * scope, content, result etc. Maximum character limit: 140 characters.
    * </pre>
    *
-   * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>string description = 8;</code>
    *
    * @return The bytes for description.
    */
@@ -6153,7 +6153,7 @@ public int getLabelsCount() {
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6166,7 +6166,7 @@ public int getLabelsCount() {
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     @java.lang.Override
     public boolean containsLabels(java.lang.String key) {
@@ -6185,7 +6185,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabels() {
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6198,7 +6198,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabels() {
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     @java.lang.Override
     public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
@@ -6208,7 +6208,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6221,7 +6221,7 @@ public java.util.Map<java.lang.String, java.lang.String> getLabelsMap() {
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     @java.lang.Override
     public java.lang.String getLabelsOrDefault(
@@ -6236,7 +6236,7 @@ public java.lang.String getLabelsOrDefault(
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6249,7 +6249,7 @@ public java.lang.String getLabelsOrDefault(
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     @java.lang.Override
     public java.lang.String getLabelsOrThrow(java.lang.String key) {
@@ -6271,7 +6271,7 @@ public Builder clearLabels() {
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6284,7 +6284,7 @@ public Builder clearLabels() {
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     public Builder removeLabels(java.lang.String key) {
       if (key == null) {
@@ -6302,7 +6302,7 @@ public java.util.Map<java.lang.String, java.lang.String> getMutableLabels() {
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6315,7 +6315,7 @@ public java.util.Map<java.lang.String, java.lang.String> getMutableLabels() {
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     public Builder putLabels(java.lang.String key, java.lang.String value) {
       if (key == null) {
@@ -6331,7 +6331,7 @@ public Builder putLabels(java.lang.String key, java.lang.String value) {
      *
      *
      * <pre>
-     * Optional. The key/value metadata to label an intent. Labels can contain
+     * The key/value metadata to label an intent. Labels can contain
      * lowercase letters, digits and the symbols '-' and '_'. International
      * characters are allowed, including letters from unicase alphabets. Keys must
      * start with a letter. Keys and values can be no longer than 63 characters
@@ -6344,7 +6344,7 @@ public Builder putLabels(java.lang.String key, java.lang.String value) {
      * head intent. "sys.contextual" means the intent is a contextual intent.
      * </pre>
      *
-     * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>map&lt;string, string&gt; labels = 7;</code>
      */
     public Builder putAllLabels(java.util.Map<java.lang.String, java.lang.String> values) {
       internalGetMutableLabels().getMutableMap().putAll(values);
@@ -6356,11 +6356,11 @@ public Builder putAllLabels(java.util.Map<java.lang.String, java.lang.String> va
      *
      *
      * <pre>
-     * Optional. Human readable description for better understanding an intent like its
+     * Human readable description for better understanding an intent like its
      * scope, content, result etc. Maximum character limit: 140 characters.
      * </pre>
      *
-     * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>string description = 8;</code>
      *
      * @return The description.
      */
@@ -6379,11 +6379,11 @@ public java.lang.String getDescription() {
      *
      *
      * <pre>
-     * Optional. Human readable description for better understanding an intent like its
+     * Human readable description for better understanding an intent like its
      * scope, content, result etc. Maximum character limit: 140 characters.
      * </pre>
      *
-     * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>string description = 8;</code>
      *
      * @return The bytes for description.
      */
@@ -6402,11 +6402,11 @@ public com.google.protobuf.ByteString getDescriptionBytes() {
      *
      *
      * <pre>
-     * Optional. Human readable description for better understanding an intent like its
+     * Human readable description for better understanding an intent like its
      * scope, content, result etc. Maximum character limit: 140 characters.
      * </pre>
      *
-     * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>string description = 8;</code>
      *
      * @param value The description to set.
      * @return This builder for chaining.
@@ -6424,11 +6424,11 @@ public Builder setDescription(java.lang.String value) {
      *
      *
      * <pre>
-     * Optional. Human readable description for better understanding an intent like its
+     * Human readable description for better understanding an intent like its
      * scope, content, result etc. Maximum character limit: 140 characters.
      * </pre>
      *
-     * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>string description = 8;</code>
      *
      * @return This builder for chaining.
      */
@@ -6442,11 +6442,11 @@ public Builder clearDescription() {
      *
      *
      * <pre>
-     * Optional. Human readable description for better understanding an intent like its
+     * Human readable description for better understanding an intent like its
      * scope, content, result etc. Maximum character limit: 140 characters.
      * </pre>
      *
-     * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+     * <code>string description = 8;</code>
      *
      * @param value The bytes for description to set.
      * @return This builder for chaining.
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentOrBuilder.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentOrBuilder.java
index d0753e8f6..e588e0545 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentOrBuilder.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentOrBuilder.java
@@ -237,7 +237,7 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -250,14 +250,14 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   int getLabelsCount();
   /**
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -270,7 +270,7 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   boolean containsLabels(java.lang.String key);
   /** Use {@link #getLabelsMap()} instead. */
@@ -280,7 +280,7 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -293,14 +293,14 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   java.util.Map<java.lang.String, java.lang.String> getLabelsMap();
   /**
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -313,14 +313,14 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   java.lang.String getLabelsOrDefault(java.lang.String key, java.lang.String defaultValue);
   /**
    *
    *
    * <pre>
-   * Optional. The key/value metadata to label an intent. Labels can contain
+   * The key/value metadata to label an intent. Labels can contain
    * lowercase letters, digits and the symbols '-' and '_'. International
    * characters are allowed, including letters from unicase alphabets. Keys must
    * start with a letter. Keys and values can be no longer than 63 characters
@@ -333,7 +333,7 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    * head intent. "sys.contextual" means the intent is a contextual intent.
    * </pre>
    *
-   * <code>map&lt;string, string&gt; labels = 7 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>map&lt;string, string&gt; labels = 7;</code>
    */
   java.lang.String getLabelsOrThrow(java.lang.String key);
 
@@ -341,11 +341,11 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    *
    *
    * <pre>
-   * Optional. Human readable description for better understanding an intent like its
+   * Human readable description for better understanding an intent like its
    * scope, content, result etc. Maximum character limit: 140 characters.
    * </pre>
    *
-   * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>string description = 8;</code>
    *
    * @return The description.
    */
@@ -354,11 +354,11 @@ com.google.cloud.dialogflow.cx.v3.Intent.TrainingPhraseOrBuilder getTrainingPhra
    *
    *
    * <pre>
-   * Optional. Human readable description for better understanding an intent like its
+   * Human readable description for better understanding an intent like its
    * scope, content, result etc. Maximum character limit: 140 characters.
    * </pre>
    *
-   * <code>string description = 8 [(.google.api.field_behavior) = OPTIONAL];</code>
+   * <code>string description = 8;</code>
    *
    * @return The bytes for description.
    */
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentProto.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentProto.java
index 9e84bc559..e68bd9190 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentProto.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/IntentProto.java
@@ -86,80 +86,80 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "ient.proto\032\037google/api/field_behavior.pr"
           + "oto\032\031google/api/resource.proto\032\033google/p"
           + "rotobuf/empty.proto\032 google/protobuf/fie"
-          + "ld_mask.proto\"\246\006\n\006Intent\022\014\n\004name\030\001 \001(\t\022\031"
+          + "ld_mask.proto\"\234\006\n\006Intent\022\014\n\004name\030\001 \001(\t\022\031"
           + "\n\014display_name\030\002 \001(\tB\003\340A\002\022N\n\020training_ph"
           + "rases\030\003 \003(\01324.google.cloud.dialogflow.cx"
           + ".v3.Intent.TrainingPhrase\022C\n\nparameters\030"
           + "\004 \003(\0132/.google.cloud.dialogflow.cx.v3.In"
           + "tent.Parameter\022\020\n\010priority\030\005 \001(\005\022\023\n\013is_f"
-          + "allback\030\006 \001(\010\022F\n\006labels\030\007 \003(\01321.google.c"
+          + "allback\030\006 \001(\010\022A\n\006labels\030\007 \003(\01321.google.c"
           + "loud.dialogflow.cx.v3.Intent.LabelsEntry"
-          + "B\003\340A\001\022\030\n\013description\030\010 \001(\tB\003\340A\001\032\262\001\n\016Trai"
-          + "ningPhrase\022\n\n\002id\030\001 \001(\t\022M\n\005parts\030\002 \003(\01329."
-          + "google.cloud.dialogflow.cx.v3.Intent.Tra"
-          + "iningPhrase.PartB\003\340A\002\022\024\n\014repeat_count\030\003 "
-          + "\001(\005\032/\n\004Part\022\021\n\004text\030\001 \001(\tB\003\340A\002\022\024\n\014parame"
-          + "ter_id\030\002 \001(\t\032\200\001\n\tParameter\022\017\n\002id\030\001 \001(\tB\003"
-          + "\340A\002\022A\n\013entity_type\030\002 \001(\tB,\340A\002\372A&\n$dialog"
-          + "flow.googleapis.com/EntityType\022\017\n\007is_lis"
-          + "t\030\003 \001(\010\022\016\n\006redact\030\004 \001(\010\032-\n\013LabelsEntry\022\013"
-          + "\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001:n\352Ak\n dia"
-          + "logflow.googleapis.com/Intent\022Gprojects/"
-          + "{project}/locations/{location}/agents/{a"
-          + "gent}/intents/{intent}\"\314\001\n\022ListIntentsRe"
-          + "quest\0228\n\006parent\030\001 \001(\tB(\340A\002\372A\"\022 dialogflo"
-          + "w.googleapis.com/Intent\022\025\n\rlanguage_code"
-          + "\030\002 \001(\t\022>\n\013intent_view\030\005 \001(\0162).google.clo"
-          + "ud.dialogflow.cx.v3.IntentView\022\021\n\tpage_s"
-          + "ize\030\003 \001(\005\022\022\n\npage_token\030\004 \001(\t\"f\n\023ListInt"
-          + "entsResponse\0226\n\007intents\030\001 \003(\0132%.google.c"
-          + "loud.dialogflow.cx.v3.Intent\022\027\n\017next_pag"
-          + "e_token\030\002 \001(\t\"a\n\020GetIntentRequest\0226\n\004nam"
-          + "e\030\001 \001(\tB(\340A\002\372A\"\n dialogflow.googleapis.c"
-          + "om/Intent\022\025\n\rlanguage_code\030\002 \001(\t\"\242\001\n\023Cre"
-          + "ateIntentRequest\0228\n\006parent\030\001 \001(\tB(\340A\002\372A\""
-          + "\022 dialogflow.googleapis.com/Intent\022:\n\006in"
-          + "tent\030\002 \001(\0132%.google.cloud.dialogflow.cx."
-          + "v3.IntentB\003\340A\002\022\025\n\rlanguage_code\030\003 \001(\t\"\231\001"
-          + "\n\023UpdateIntentRequest\022:\n\006intent\030\001 \001(\0132%."
-          + "google.cloud.dialogflow.cx.v3.IntentB\003\340A"
-          + "\002\022\025\n\rlanguage_code\030\002 \001(\t\022/\n\013update_mask\030"
-          + "\003 \001(\0132\032.google.protobuf.FieldMask\"M\n\023Del"
-          + "eteIntentRequest\0226\n\004name\030\001 \001(\tB(\340A\002\372A\"\n "
-          + "dialogflow.googleapis.com/Intent*X\n\nInte"
-          + "ntView\022\033\n\027INTENT_VIEW_UNSPECIFIED\020\000\022\027\n\023I"
-          + "NTENT_VIEW_PARTIAL\020\001\022\024\n\020INTENT_VIEW_FULL"
-          + "\020\0022\236\010\n\007Intents\022\273\001\n\013ListIntents\0221.google."
-          + "cloud.dialogflow.cx.v3.ListIntentsReques"
-          + "t\0322.google.cloud.dialogflow.cx.v3.ListIn"
-          + "tentsResponse\"E\202\323\344\223\0026\0224/v3/{parent=proje"
-          + "cts/*/locations/*/agents/*}/intents\332A\006pa"
-          + "rent\022\250\001\n\tGetIntent\022/.google.cloud.dialog"
-          + "flow.cx.v3.GetIntentRequest\032%.google.clo"
-          + "ud.dialogflow.cx.v3.Intent\"C\202\323\344\223\0026\0224/v3/"
-          + "{name=projects/*/locations/*/agents/*/in"
-          + "tents/*}\332A\004name\022\277\001\n\014CreateIntent\0222.googl"
-          + "e.cloud.dialogflow.cx.v3.CreateIntentReq"
-          + "uest\032%.google.cloud.dialogflow.cx.v3.Int"
-          + "ent\"T\202\323\344\223\002>\"4/v3/{parent=projects/*/loca"
-          + "tions/*/agents/*}/intents:\006intent\332A\rpare"
-          + "nt,intent\022\313\001\n\014UpdateIntent\0222.google.clou"
-          + "d.dialogflow.cx.v3.UpdateIntentRequest\032%"
-          + ".google.cloud.dialogflow.cx.v3.Intent\"`\202"
-          + "\323\344\223\002E2;/v3/{intent.name=projects/*/locat"
-          + "ions/*/agents/*/intents/*}:\006intent\332A\022int"
-          + "ent,update_mask\022\237\001\n\014DeleteIntent\0222.googl"
-          + "e.cloud.dialogflow.cx.v3.DeleteIntentReq"
-          + "uest\032\026.google.protobuf.Empty\"C\202\323\344\223\0026*4/v"
-          + "3/{name=projects/*/locations/*/agents/*/"
-          + "intents/*}\332A\004name\032x\312A\031dialogflow.googlea"
-          + "pis.com\322AYhttps://www.googleapis.com/aut"
-          + "h/cloud-platform,https://www.googleapis."
-          + "com/auth/dialogflowB\233\001\n!com.google.cloud"
-          + ".dialogflow.cx.v3B\013IntentProtoP\001Z?google"
-          + ".golang.org/genproto/googleapis/cloud/di"
-          + "alogflow/cx/v3;cx\370\001\001\242\002\002DF\252\002\035Google.Cloud"
-          + ".Dialogflow.Cx.V3b\006proto3"
+          + "\022\023\n\013description\030\010 \001(\t\032\262\001\n\016TrainingPhrase"
+          + "\022\n\n\002id\030\001 \001(\t\022M\n\005parts\030\002 \003(\01329.google.clo"
+          + "ud.dialogflow.cx.v3.Intent.TrainingPhras"
+          + "e.PartB\003\340A\002\022\024\n\014repeat_count\030\003 \001(\005\032/\n\004Par"
+          + "t\022\021\n\004text\030\001 \001(\tB\003\340A\002\022\024\n\014parameter_id\030\002 \001"
+          + "(\t\032\200\001\n\tParameter\022\017\n\002id\030\001 \001(\tB\003\340A\002\022A\n\013ent"
+          + "ity_type\030\002 \001(\tB,\340A\002\372A&\n$dialogflow.googl"
+          + "eapis.com/EntityType\022\017\n\007is_list\030\003 \001(\010\022\016\n"
+          + "\006redact\030\004 \001(\010\032-\n\013LabelsEntry\022\013\n\003key\030\001 \001("
+          + "\t\022\r\n\005value\030\002 \001(\t:\0028\001:n\352Ak\n dialogflow.go"
+          + "ogleapis.com/Intent\022Gprojects/{project}/"
+          + "locations/{location}/agents/{agent}/inte"
+          + "nts/{intent}\"\314\001\n\022ListIntentsRequest\0228\n\006p"
+          + "arent\030\001 \001(\tB(\340A\002\372A\"\022 dialogflow.googleap"
+          + "is.com/Intent\022\025\n\rlanguage_code\030\002 \001(\t\022>\n\013"
+          + "intent_view\030\005 \001(\0162).google.cloud.dialogf"
+          + "low.cx.v3.IntentView\022\021\n\tpage_size\030\003 \001(\005\022"
+          + "\022\n\npage_token\030\004 \001(\t\"f\n\023ListIntentsRespon"
+          + "se\0226\n\007intents\030\001 \003(\0132%.google.cloud.dialo"
+          + "gflow.cx.v3.Intent\022\027\n\017next_page_token\030\002 "
+          + "\001(\t\"a\n\020GetIntentRequest\0226\n\004name\030\001 \001(\tB(\340"
+          + "A\002\372A\"\n dialogflow.googleapis.com/Intent\022"
+          + "\025\n\rlanguage_code\030\002 \001(\t\"\242\001\n\023CreateIntentR"
+          + "equest\0228\n\006parent\030\001 \001(\tB(\340A\002\372A\"\022 dialogfl"
+          + "ow.googleapis.com/Intent\022:\n\006intent\030\002 \001(\013"
+          + "2%.google.cloud.dialogflow.cx.v3.IntentB"
+          + "\003\340A\002\022\025\n\rlanguage_code\030\003 \001(\t\"\231\001\n\023UpdateIn"
+          + "tentRequest\022:\n\006intent\030\001 \001(\0132%.google.clo"
+          + "ud.dialogflow.cx.v3.IntentB\003\340A\002\022\025\n\rlangu"
+          + "age_code\030\002 \001(\t\022/\n\013update_mask\030\003 \001(\0132\032.go"
+          + "ogle.protobuf.FieldMask\"M\n\023DeleteIntentR"
+          + "equest\0226\n\004name\030\001 \001(\tB(\340A\002\372A\"\n dialogflow"
+          + ".googleapis.com/Intent*X\n\nIntentView\022\033\n\027"
+          + "INTENT_VIEW_UNSPECIFIED\020\000\022\027\n\023INTENT_VIEW"
+          + "_PARTIAL\020\001\022\024\n\020INTENT_VIEW_FULL\020\0022\236\010\n\007Int"
+          + "ents\022\273\001\n\013ListIntents\0221.google.cloud.dial"
+          + "ogflow.cx.v3.ListIntentsRequest\0322.google"
+          + ".cloud.dialogflow.cx.v3.ListIntentsRespo"
+          + "nse\"E\202\323\344\223\0026\0224/v3/{parent=projects/*/loca"
+          + "tions/*/agents/*}/intents\332A\006parent\022\250\001\n\tG"
+          + "etIntent\022/.google.cloud.dialogflow.cx.v3"
+          + ".GetIntentRequest\032%.google.cloud.dialogf"
+          + "low.cx.v3.Intent\"C\202\323\344\223\0026\0224/v3/{name=proj"
+          + "ects/*/locations/*/agents/*/intents/*}\332A"
+          + "\004name\022\277\001\n\014CreateIntent\0222.google.cloud.di"
+          + "alogflow.cx.v3.CreateIntentRequest\032%.goo"
+          + "gle.cloud.dialogflow.cx.v3.Intent\"T\202\323\344\223\002"
+          + ">\"4/v3/{parent=projects/*/locations/*/ag"
+          + "ents/*}/intents:\006intent\332A\rparent,intent\022"
+          + "\313\001\n\014UpdateIntent\0222.google.cloud.dialogfl"
+          + "ow.cx.v3.UpdateIntentRequest\032%.google.cl"
+          + "oud.dialogflow.cx.v3.Intent\"`\202\323\344\223\002E2;/v3"
+          + "/{intent.name=projects/*/locations/*/age"
+          + "nts/*/intents/*}:\006intent\332A\022intent,update"
+          + "_mask\022\237\001\n\014DeleteIntent\0222.google.cloud.di"
+          + "alogflow.cx.v3.DeleteIntentRequest\032\026.goo"
+          + "gle.protobuf.Empty\"C\202\323\344\223\0026*4/v3/{name=pr"
+          + "ojects/*/locations/*/agents/*/intents/*}"
+          + "\332A\004name\032x\312A\031dialogflow.googleapis.com\322AY"
+          + "https://www.googleapis.com/auth/cloud-pl"
+          + "atform,https://www.googleapis.com/auth/d"
+          + "ialogflowB\233\001\n!com.google.cloud.dialogflo"
+          + "w.cx.v3B\013IntentProtoP\001Z?google.golang.or"
+          + "g/genproto/googleapis/cloud/dialogflow/c"
+          + "x/v3;cx\370\001\001\242\002\002DF\252\002\035Google.Cloud.Dialogflo"
+          + "w.Cx.V3b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParameters.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParameters.java
index 165395924..cdf647298 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParameters.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParameters.java
@@ -40,6 +40,7 @@ private QueryParameters(com.google.protobuf.GeneratedMessageV3.Builder<?> builde
   private QueryParameters() {
     timeZone_ = "";
     sessionEntityTypes_ = java.util.Collections.emptyList();
+    currentPage_ = "";
   }
 
   @java.lang.Override
@@ -133,6 +134,13 @@ private QueryParameters(
                 parameters_ = subBuilder.buildPartial();
               }
 
+              break;
+            }
+          case 50:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              currentPage_ = s;
               break;
             }
           case 56:
@@ -540,6 +548,73 @@ public com.google.protobuf.StructOrBuilder getParametersOrBuilder() {
     return getParameters();
   }
 
+  public static final int CURRENT_PAGE_FIELD_NUMBER = 6;
+  private volatile java.lang.Object currentPage_;
+  /**
+   *
+   *
+   * <pre>
+   * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+   * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+   * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+   * If `current_page` is specified, the previous state of the session will be
+   * ignored by Dialogflow, including the [previous
+   * page][QueryResult.current_page] and the [previous session
+   * parameters][QueryResult.parameters].
+   * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+   * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+   * direct a session to a specific state.
+   * </pre>
+   *
+   * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The currentPage.
+   */
+  @java.lang.Override
+  public java.lang.String getCurrentPage() {
+    java.lang.Object ref = currentPage_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      currentPage_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+   * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+   * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+   * If `current_page` is specified, the previous state of the session will be
+   * ignored by Dialogflow, including the [previous
+   * page][QueryResult.current_page] and the [previous session
+   * parameters][QueryResult.parameters].
+   * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+   * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+   * direct a session to a specific state.
+   * </pre>
+   *
+   * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The bytes for currentPage.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getCurrentPageBytes() {
+    java.lang.Object ref = currentPage_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      currentPage_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   public static final int DISABLE_WEBHOOK_FIELD_NUMBER = 7;
   private boolean disableWebhook_;
   /**
@@ -735,6 +810,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (parameters_ != null) {
       output.writeMessage(5, getParameters());
     }
+    if (!getCurrentPageBytes().isEmpty()) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 6, currentPage_);
+    }
     if (disableWebhook_ != false) {
       output.writeBool(7, disableWebhook_);
     }
@@ -768,6 +846,9 @@ public int getSerializedSize() {
     if (parameters_ != null) {
       size += com.google.protobuf.CodedOutputStream.computeMessageSize(5, getParameters());
     }
+    if (!getCurrentPageBytes().isEmpty()) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, currentPage_);
+    }
     if (disableWebhook_ != false) {
       size += com.google.protobuf.CodedOutputStream.computeBoolSize(7, disableWebhook_);
     }
@@ -814,6 +895,7 @@ public boolean equals(final java.lang.Object obj) {
     if (hasParameters()) {
       if (!getParameters().equals(other.getParameters())) return false;
     }
+    if (!getCurrentPage().equals(other.getCurrentPage())) return false;
     if (getDisableWebhook() != other.getDisableWebhook()) return false;
     if (getAnalyzeQueryTextSentiment() != other.getAnalyzeQueryTextSentiment()) return false;
     if (!internalGetWebhookHeaders().equals(other.internalGetWebhookHeaders())) return false;
@@ -846,6 +928,8 @@ public int hashCode() {
       hash = (37 * hash) + PARAMETERS_FIELD_NUMBER;
       hash = (53 * hash) + getParameters().hashCode();
     }
+    hash = (37 * hash) + CURRENT_PAGE_FIELD_NUMBER;
+    hash = (53 * hash) + getCurrentPage().hashCode();
     hash = (37 * hash) + DISABLE_WEBHOOK_FIELD_NUMBER;
     hash = (53 * hash) + com.google.protobuf.Internal.hashBoolean(getDisableWebhook());
     hash = (37 * hash) + ANALYZE_QUERY_TEXT_SENTIMENT_FIELD_NUMBER;
@@ -1047,6 +1131,8 @@ public Builder clear() {
         parameters_ = null;
         parametersBuilder_ = null;
       }
+      currentPage_ = "";
+
       disableWebhook_ = false;
 
       analyzeQueryTextSentiment_ = false;
@@ -1105,6 +1191,7 @@ public com.google.cloud.dialogflow.cx.v3.QueryParameters buildPartial() {
       } else {
         result.parameters_ = parametersBuilder_.build();
       }
+      result.currentPage_ = currentPage_;
       result.disableWebhook_ = disableWebhook_;
       result.analyzeQueryTextSentiment_ = analyzeQueryTextSentiment_;
       result.webhookHeaders_ = internalGetWebhookHeaders();
@@ -1199,6 +1286,10 @@ public Builder mergeFrom(com.google.cloud.dialogflow.cx.v3.QueryParameters other
       if (other.hasParameters()) {
         mergeParameters(other.getParameters());
       }
+      if (!other.getCurrentPage().isEmpty()) {
+        currentPage_ = other.currentPage_;
+        onChanged();
+      }
       if (other.getDisableWebhook() != false) {
         setDisableWebhook(other.getDisableWebhook());
       }
@@ -2463,6 +2554,157 @@ public com.google.protobuf.StructOrBuilder getParametersOrBuilder() {
       return parametersBuilder_;
     }
 
+    private java.lang.Object currentPage_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+     * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+     * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+     * If `current_page` is specified, the previous state of the session will be
+     * ignored by Dialogflow, including the [previous
+     * page][QueryResult.current_page] and the [previous session
+     * parameters][QueryResult.parameters].
+     * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+     * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+     * direct a session to a specific state.
+     * </pre>
+     *
+     * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return The currentPage.
+     */
+    public java.lang.String getCurrentPage() {
+      java.lang.Object ref = currentPage_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        currentPage_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+     * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+     * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+     * If `current_page` is specified, the previous state of the session will be
+     * ignored by Dialogflow, including the [previous
+     * page][QueryResult.current_page] and the [previous session
+     * parameters][QueryResult.parameters].
+     * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+     * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+     * direct a session to a specific state.
+     * </pre>
+     *
+     * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return The bytes for currentPage.
+     */
+    public com.google.protobuf.ByteString getCurrentPageBytes() {
+      java.lang.Object ref = currentPage_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        currentPage_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+     * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+     * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+     * If `current_page` is specified, the previous state of the session will be
+     * ignored by Dialogflow, including the [previous
+     * page][QueryResult.current_page] and the [previous session
+     * parameters][QueryResult.parameters].
+     * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+     * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+     * direct a session to a specific state.
+     * </pre>
+     *
+     * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @param value The currentPage to set.
+     * @return This builder for chaining.
+     */
+    public Builder setCurrentPage(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      currentPage_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+     * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+     * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+     * If `current_page` is specified, the previous state of the session will be
+     * ignored by Dialogflow, including the [previous
+     * page][QueryResult.current_page] and the [previous session
+     * parameters][QueryResult.parameters].
+     * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+     * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+     * direct a session to a specific state.
+     * </pre>
+     *
+     * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearCurrentPage() {
+
+      currentPage_ = getDefaultInstance().getCurrentPage();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+     * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+     * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+     * If `current_page` is specified, the previous state of the session will be
+     * ignored by Dialogflow, including the [previous
+     * page][QueryResult.current_page] and the [previous session
+     * parameters][QueryResult.parameters].
+     * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+     * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+     * direct a session to a specific state.
+     * </pre>
+     *
+     * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+     *
+     * @param value The bytes for currentPage to set.
+     * @return This builder for chaining.
+     */
+    public Builder setCurrentPageBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      currentPage_ = value;
+      onChanged();
+      return this;
+    }
+
     private boolean disableWebhook_;
     /**
      *
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParametersOrBuilder.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParametersOrBuilder.java
index bb027f3da..7c8f54f8a 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParametersOrBuilder.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/QueryParametersOrBuilder.java
@@ -278,6 +278,49 @@ com.google.cloud.dialogflow.cx.v3.SessionEntityTypeOrBuilder getSessionEntityTyp
    */
   com.google.protobuf.StructOrBuilder getParametersOrBuilder();
 
+  /**
+   *
+   *
+   * <pre>
+   * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+   * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+   * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+   * If `current_page` is specified, the previous state of the session will be
+   * ignored by Dialogflow, including the [previous
+   * page][QueryResult.current_page] and the [previous session
+   * parameters][QueryResult.parameters].
+   * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+   * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+   * direct a session to a specific state.
+   * </pre>
+   *
+   * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The currentPage.
+   */
+  java.lang.String getCurrentPage();
+  /**
+   *
+   *
+   * <pre>
+   * The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+   * page][QueryResult.current_page] in the session. Format: `projects/&lt;Project
+   * ID&gt;/locations/&lt;Location ID&gt;/agents/&lt;Agent ID&gt;/pages/&lt;page ID&gt;`.
+   * If `current_page` is specified, the previous state of the session will be
+   * ignored by Dialogflow, including the [previous
+   * page][QueryResult.current_page] and the [previous session
+   * parameters][QueryResult.parameters].
+   * In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+   * [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+   * direct a session to a specific state.
+   * </pre>
+   *
+   * <code>string current_page = 6 [(.google.api.resource_reference) = { ... }</code>
+   *
+   * @return The bytes for currentPage.
+   */
+  com.google.protobuf.ByteString getCurrentPageBytes();
+
   /**
    *
    *
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionProto.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionProto.java
index 632f5c840..1d042f220 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionProto.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/SessionProto.java
@@ -167,128 +167,129 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "ch_end_offset\030\010 \001(\0132\031.google.protobuf.Du"
           + "ration\"X\n\013MessageType\022\034\n\030MESSAGE_TYPE_UN"
           + "SPECIFIED\020\000\022\016\n\nTRANSCRIPT\020\001\022\033\n\027END_OF_SI"
-          + "NGLE_UTTERANCE\020\002\"\311\003\n\017QueryParameters\022\021\n\t"
+          + "NGLE_UTTERANCE\020\002\"\204\004\n\017QueryParameters\022\021\n\t"
           + "time_zone\030\001 \001(\t\022)\n\014geo_location\030\002 \001(\0132\023."
           + "google.type.LatLng\022N\n\024session_entity_typ"
           + "es\030\003 \003(\01320.google.cloud.dialogflow.cx.v3"
           + ".SessionEntityType\022(\n\007payload\030\004 \001(\0132\027.go"
           + "ogle.protobuf.Struct\022+\n\nparameters\030\005 \001(\013"
-          + "2\027.google.protobuf.Struct\022\027\n\017disable_web"
-          + "hook\030\007 \001(\010\022$\n\034analyze_query_text_sentime"
-          + "nt\030\010 \001(\010\022[\n\017webhook_headers\030\n \003(\0132B.goog"
-          + "le.cloud.dialogflow.cx.v3.QueryParameter"
-          + "s.WebhookHeadersEntry\0325\n\023WebhookHeadersE"
-          + "ntry\022\013\n\003key\030\001 \001(\t\022\r\n\005value\030\002 \001(\t:\0028\001\"\333\002\n"
-          + "\nQueryInput\0228\n\004text\030\002 \001(\0132(.google.cloud"
-          + ".dialogflow.cx.v3.TextInputH\000\022<\n\006intent\030"
-          + "\003 \001(\0132*.google.cloud.dialogflow.cx.v3.In"
-          + "tentInputH\000\022:\n\005audio\030\005 \001(\0132).google.clou"
-          + "d.dialogflow.cx.v3.AudioInputH\000\022:\n\005event"
-          + "\030\006 \001(\0132).google.cloud.dialogflow.cx.v3.E"
-          + "ventInputH\000\0228\n\004dtmf\030\007 \001(\0132(.google.cloud"
-          + ".dialogflow.cx.v3.DtmfInputH\000\022\032\n\rlanguag"
-          + "e_code\030\004 \001(\tB\003\340A\002B\007\n\005input\"\347\005\n\013QueryResu"
-          + "lt\022\016\n\004text\030\001 \001(\tH\000\022?\n\016trigger_intent\030\013 \001"
-          + "(\tB%\372A\"\n dialogflow.googleapis.com/Inten"
-          + "tH\000\022\024\n\ntranscript\030\014 \001(\tH\000\022\027\n\rtrigger_eve"
-          + "nt\030\016 \001(\tH\000\022\025\n\rlanguage_code\030\002 \001(\t\022+\n\npar"
-          + "ameters\030\003 \001(\0132\027.google.protobuf.Struct\022I"
-          + "\n\021response_messages\030\004 \003(\0132..google.cloud"
-          + ".dialogflow.cx.v3.ResponseMessage\022,\n\020web"
-          + "hook_statuses\030\r \003(\0132\022.google.rpc.Status\022"
-          + "1\n\020webhook_payloads\030\006 \003(\0132\027.google.proto"
-          + "buf.Struct\0229\n\014current_page\030\007 \001(\0132#.googl"
-          + "e.cloud.dialogflow.cx.v3.Page\0229\n\006intent\030"
-          + "\010 \001(\0132%.google.cloud.dialogflow.cx.v3.In"
-          + "tentB\002\030\001\022\'\n\033intent_detection_confidence\030"
-          + "\t \001(\002B\002\030\001\0223\n\005match\030\017 \001(\0132$.google.cloud."
-          + "dialogflow.cx.v3.Match\0220\n\017diagnostic_inf"
-          + "o\030\n \001(\0132\027.google.protobuf.Struct\022Y\n\031sent"
-          + "iment_analysis_result\030\021 \001(\01326.google.clo"
-          + "ud.dialogflow.cx.v3.SentimentAnalysisRes"
-          + "ultB\007\n\005query\"\036\n\tTextInput\022\021\n\004text\030\001 \001(\tB"
-          + "\003\340A\002\"G\n\013IntentInput\0228\n\006intent\030\001 \001(\tB(\340A\002"
-          + "\372A\"\n dialogflow.googleapis.com/Intent\"a\n"
-          + "\nAudioInput\022D\n\006config\030\001 \001(\0132/.google.clo"
-          + "ud.dialogflow.cx.v3.InputAudioConfigB\003\340A"
-          + "\002\022\r\n\005audio\030\002 \001(\014\"\033\n\nEventInput\022\r\n\005event\030"
-          + "\001 \001(\t\"1\n\tDtmfInput\022\016\n\006digits\030\001 \001(\t\022\024\n\014fi"
-          + "nish_digit\030\002 \001(\t\"\361\002\n\005Match\0225\n\006intent\030\001 \001"
-          + "(\0132%.google.cloud.dialogflow.cx.v3.Inten"
-          + "t\022\r\n\005event\030\006 \001(\t\022+\n\nparameters\030\002 \001(\0132\027.g"
-          + "oogle.protobuf.Struct\022\026\n\016resolved_input\030"
-          + "\003 \001(\t\022B\n\nmatch_type\030\004 \001(\0162..google.cloud"
-          + ".dialogflow.cx.v3.Match.MatchType\022\022\n\ncon"
-          + "fidence\030\005 \001(\002\"\204\001\n\tMatchType\022\032\n\026MATCH_TYP"
-          + "E_UNSPECIFIED\020\000\022\n\n\006INTENT\020\001\022\021\n\rDIRECT_IN"
-          + "TENT\020\002\022\025\n\021PARAMETER_FILLING\020\003\022\014\n\010NO_MATC"
-          + "H\020\004\022\014\n\010NO_INPUT\020\005\022\t\n\005EVENT\020\006\"\333\001\n\022MatchIn"
-          + "tentRequest\022:\n\007session\030\001 \001(\tB)\340A\002\372A#\n!di"
-          + "alogflow.googleapis.com/Session\022D\n\014query"
-          + "_params\030\002 \001(\0132..google.cloud.dialogflow."
-          + "cx.v3.QueryParameters\022C\n\013query_input\030\003 \001"
-          + "(\0132).google.cloud.dialogflow.cx.v3.Query"
-          + "InputB\003\340A\002\"\220\002\n\023MatchIntentResponse\022\016\n\004te"
-          + "xt\030\001 \001(\tH\000\022?\n\016trigger_intent\030\002 \001(\tB%\372A\"\n"
-          + " dialogflow.googleapis.com/IntentH\000\022\024\n\nt"
-          + "ranscript\030\003 \001(\tH\000\022\027\n\rtrigger_event\030\006 \001(\t"
-          + "H\000\0225\n\007matches\030\004 \003(\0132$.google.cloud.dialo"
-          + "gflow.cx.v3.Match\0229\n\014current_page\030\005 \001(\0132"
-          + "#.google.cloud.dialogflow.cx.v3.PageB\007\n\005"
-          + "query\"\353\001\n\024FulfillIntentRequest\022O\n\024match_"
-          + "intent_request\030\001 \001(\01321.google.cloud.dial"
-          + "ogflow.cx.v3.MatchIntentRequest\0223\n\005match"
-          + "\030\002 \001(\0132$.google.cloud.dialogflow.cx.v3.M"
-          + "atch\022M\n\023output_audio_config\030\003 \001(\01320.goog"
-          + "le.cloud.dialogflow.cx.v3.OutputAudioCon"
-          + "fig\"\323\001\n\025FulfillIntentResponse\022\023\n\013respons"
-          + "e_id\030\001 \001(\t\022@\n\014query_result\030\002 \001(\0132*.googl"
-          + "e.cloud.dialogflow.cx.v3.QueryResult\022\024\n\014"
-          + "output_audio\030\003 \001(\014\022M\n\023output_audio_confi"
-          + "g\030\004 \001(\01320.google.cloud.dialogflow.cx.v3."
-          + "OutputAudioConfig\";\n\027SentimentAnalysisRe"
-          + "sult\022\r\n\005score\030\001 \001(\002\022\021\n\tmagnitude\030\002 \001(\0022\304"
-          + "\t\n\010Sessions\022\246\002\n\014DetectIntent\0222.google.cl"
-          + "oud.dialogflow.cx.v3.DetectIntentRequest"
-          + "\0323.google.cloud.dialogflow.cx.v3.DetectI"
-          + "ntentResponse\"\254\001\202\323\344\223\002\245\001\"E/v3/{session=pr"
-          + "ojects/*/locations/*/agents/*/sessions/*"
-          + "}:detectIntent:\001*ZY\"T/v3/{session=projec"
-          + "ts/*/locations/*/agents/*/environments/*"
-          + "/sessions/*}:detectIntent:\001*\022\230\001\n\025Streami"
-          + "ngDetectIntent\022;.google.cloud.dialogflow"
-          + ".cx.v3.StreamingDetectIntentRequest\032<.go"
-          + "ogle.cloud.dialogflow.cx.v3.StreamingDet"
-          + "ectIntentResponse\"\000(\0010\001\022\241\002\n\013MatchIntent\022"
+          + "2\027.google.protobuf.Struct\0229\n\014current_pag"
+          + "e\030\006 \001(\tB#\372A \n\036dialogflow.googleapis.com/"
+          + "Page\022\027\n\017disable_webhook\030\007 \001(\010\022$\n\034analyze"
+          + "_query_text_sentiment\030\010 \001(\010\022[\n\017webhook_h"
+          + "eaders\030\n \003(\0132B.google.cloud.dialogflow.c"
+          + "x.v3.QueryParameters.WebhookHeadersEntry"
+          + "\0325\n\023WebhookHeadersEntry\022\013\n\003key\030\001 \001(\t\022\r\n\005"
+          + "value\030\002 \001(\t:\0028\001\"\333\002\n\nQueryInput\0228\n\004text\030\002"
+          + " \001(\0132(.google.cloud.dialogflow.cx.v3.Tex"
+          + "tInputH\000\022<\n\006intent\030\003 \001(\0132*.google.cloud."
+          + "dialogflow.cx.v3.IntentInputH\000\022:\n\005audio\030"
+          + "\005 \001(\0132).google.cloud.dialogflow.cx.v3.Au"
+          + "dioInputH\000\022:\n\005event\030\006 \001(\0132).google.cloud"
+          + ".dialogflow.cx.v3.EventInputH\000\0228\n\004dtmf\030\007"
+          + " \001(\0132(.google.cloud.dialogflow.cx.v3.Dtm"
+          + "fInputH\000\022\032\n\rlanguage_code\030\004 \001(\tB\003\340A\002B\007\n\005"
+          + "input\"\347\005\n\013QueryResult\022\016\n\004text\030\001 \001(\tH\000\022?\n"
+          + "\016trigger_intent\030\013 \001(\tB%\372A\"\n dialogflow.g"
+          + "oogleapis.com/IntentH\000\022\024\n\ntranscript\030\014 \001"
+          + "(\tH\000\022\027\n\rtrigger_event\030\016 \001(\tH\000\022\025\n\rlanguag"
+          + "e_code\030\002 \001(\t\022+\n\nparameters\030\003 \001(\0132\027.googl"
+          + "e.protobuf.Struct\022I\n\021response_messages\030\004"
+          + " \003(\0132..google.cloud.dialogflow.cx.v3.Res"
+          + "ponseMessage\022,\n\020webhook_statuses\030\r \003(\0132\022"
+          + ".google.rpc.Status\0221\n\020webhook_payloads\030\006"
+          + " \003(\0132\027.google.protobuf.Struct\0229\n\014current"
+          + "_page\030\007 \001(\0132#.google.cloud.dialogflow.cx"
+          + ".v3.Page\0229\n\006intent\030\010 \001(\0132%.google.cloud."
+          + "dialogflow.cx.v3.IntentB\002\030\001\022\'\n\033intent_de"
+          + "tection_confidence\030\t \001(\002B\002\030\001\0223\n\005match\030\017 "
+          + "\001(\0132$.google.cloud.dialogflow.cx.v3.Matc"
+          + "h\0220\n\017diagnostic_info\030\n \001(\0132\027.google.prot"
+          + "obuf.Struct\022Y\n\031sentiment_analysis_result"
+          + "\030\021 \001(\01326.google.cloud.dialogflow.cx.v3.S"
+          + "entimentAnalysisResultB\007\n\005query\"\036\n\tTextI"
+          + "nput\022\021\n\004text\030\001 \001(\tB\003\340A\002\"G\n\013IntentInput\0228"
+          + "\n\006intent\030\001 \001(\tB(\340A\002\372A\"\n dialogflow.googl"
+          + "eapis.com/Intent\"a\n\nAudioInput\022D\n\006config"
+          + "\030\001 \001(\0132/.google.cloud.dialogflow.cx.v3.I"
+          + "nputAudioConfigB\003\340A\002\022\r\n\005audio\030\002 \001(\014\"\033\n\nE"
+          + "ventInput\022\r\n\005event\030\001 \001(\t\"1\n\tDtmfInput\022\016\n"
+          + "\006digits\030\001 \001(\t\022\024\n\014finish_digit\030\002 \001(\t\"\361\002\n\005"
+          + "Match\0225\n\006intent\030\001 \001(\0132%.google.cloud.dia"
+          + "logflow.cx.v3.Intent\022\r\n\005event\030\006 \001(\t\022+\n\np"
+          + "arameters\030\002 \001(\0132\027.google.protobuf.Struct"
+          + "\022\026\n\016resolved_input\030\003 \001(\t\022B\n\nmatch_type\030\004"
+          + " \001(\0162..google.cloud.dialogflow.cx.v3.Mat"
+          + "ch.MatchType\022\022\n\nconfidence\030\005 \001(\002\"\204\001\n\tMat"
+          + "chType\022\032\n\026MATCH_TYPE_UNSPECIFIED\020\000\022\n\n\006IN"
+          + "TENT\020\001\022\021\n\rDIRECT_INTENT\020\002\022\025\n\021PARAMETER_F"
+          + "ILLING\020\003\022\014\n\010NO_MATCH\020\004\022\014\n\010NO_INPUT\020\005\022\t\n\005"
+          + "EVENT\020\006\"\333\001\n\022MatchIntentRequest\022:\n\007sessio"
+          + "n\030\001 \001(\tB)\340A\002\372A#\n!dialogflow.googleapis.c"
+          + "om/Session\022D\n\014query_params\030\002 \001(\0132..googl"
+          + "e.cloud.dialogflow.cx.v3.QueryParameters"
+          + "\022C\n\013query_input\030\003 \001(\0132).google.cloud.dia"
+          + "logflow.cx.v3.QueryInputB\003\340A\002\"\220\002\n\023MatchI"
+          + "ntentResponse\022\016\n\004text\030\001 \001(\tH\000\022?\n\016trigger"
+          + "_intent\030\002 \001(\tB%\372A\"\n dialogflow.googleapi"
+          + "s.com/IntentH\000\022\024\n\ntranscript\030\003 \001(\tH\000\022\027\n\r"
+          + "trigger_event\030\006 \001(\tH\000\0225\n\007matches\030\004 \003(\0132$"
+          + ".google.cloud.dialogflow.cx.v3.Match\0229\n\014"
+          + "current_page\030\005 \001(\0132#.google.cloud.dialog"
+          + "flow.cx.v3.PageB\007\n\005query\"\353\001\n\024FulfillInte"
+          + "ntRequest\022O\n\024match_intent_request\030\001 \001(\0132"
           + "1.google.cloud.dialogflow.cx.v3.MatchInt"
-          + "entRequest\0322.google.cloud.dialogflow.cx."
-          + "v3.MatchIntentResponse\"\252\001\202\323\344\223\002\243\001\"D/v3/{s"
-          + "ession=projects/*/locations/*/agents/*/s"
-          + "essions/*}:matchIntent:\001*ZX\"S/v3/{sessio"
-          + "n=projects/*/locations/*/agents/*/enviro"
-          + "nments/*/sessions/*}:matchIntent:\001*\022\325\002\n\r"
-          + "FulfillIntent\0223.google.cloud.dialogflow."
-          + "cx.v3.FulfillIntentRequest\0324.google.clou"
-          + "d.dialogflow.cx.v3.FulfillIntentResponse"
-          + "\"\330\001\202\323\344\223\002\321\001\"[/v3/{match_intent_request.se"
-          + "ssion=projects/*/locations/*/agents/*/se"
-          + "ssions/*}:fulfillIntent:\001*Zo\"j/v3/{match"
-          + "_intent_request.session=projects/*/locat"
-          + "ions/*/agents/*/environments/*/sessions/"
-          + "*}:fulfillIntent:\001*\032x\312A\031dialogflow.googl"
-          + "eapis.com\322AYhttps://www.googleapis.com/a"
-          + "uth/cloud-platform,https://www.googleapi"
-          + "s.com/auth/dialogflowB\364\002\n!com.google.clo"
-          + "ud.dialogflow.cx.v3B\014SessionProtoP\001Z?goo"
-          + "gle.golang.org/genproto/googleapis/cloud"
-          + "/dialogflow/cx/v3;cx\370\001\001\242\002\002DF\252\002\035Google.Cl"
-          + "oud.Dialogflow.Cx.V3\352A\324\001\n!dialogflow.goo"
-          + "gleapis.com/Session\022Iprojects/{project}/"
-          + "locations/{location}/agents/{agent}/sess"
-          + "ions/{session}\022dprojects/{project}/locat"
-          + "ions/{location}/agents/{agent}/environme"
-          + "nts/{environment}/sessions/{session}b\006pr"
-          + "oto3"
+          + "entRequest\0223\n\005match\030\002 \001(\0132$.google.cloud"
+          + ".dialogflow.cx.v3.Match\022M\n\023output_audio_"
+          + "config\030\003 \001(\01320.google.cloud.dialogflow.c"
+          + "x.v3.OutputAudioConfig\"\323\001\n\025FulfillIntent"
+          + "Response\022\023\n\013response_id\030\001 \001(\t\022@\n\014query_r"
+          + "esult\030\002 \001(\0132*.google.cloud.dialogflow.cx"
+          + ".v3.QueryResult\022\024\n\014output_audio\030\003 \001(\014\022M\n"
+          + "\023output_audio_config\030\004 \001(\01320.google.clou"
+          + "d.dialogflow.cx.v3.OutputAudioConfig\";\n\027"
+          + "SentimentAnalysisResult\022\r\n\005score\030\001 \001(\002\022\021"
+          + "\n\tmagnitude\030\002 \001(\0022\304\t\n\010Sessions\022\246\002\n\014Detec"
+          + "tIntent\0222.google.cloud.dialogflow.cx.v3."
+          + "DetectIntentRequest\0323.google.cloud.dialo"
+          + "gflow.cx.v3.DetectIntentResponse\"\254\001\202\323\344\223\002"
+          + "\245\001\"E/v3/{session=projects/*/locations/*/"
+          + "agents/*/sessions/*}:detectIntent:\001*ZY\"T"
+          + "/v3/{session=projects/*/locations/*/agen"
+          + "ts/*/environments/*/sessions/*}:detectIn"
+          + "tent:\001*\022\230\001\n\025StreamingDetectIntent\022;.goog"
+          + "le.cloud.dialogflow.cx.v3.StreamingDetec"
+          + "tIntentRequest\032<.google.cloud.dialogflow"
+          + ".cx.v3.StreamingDetectIntentResponse\"\000(\001"
+          + "0\001\022\241\002\n\013MatchIntent\0221.google.cloud.dialog"
+          + "flow.cx.v3.MatchIntentRequest\0322.google.c"
+          + "loud.dialogflow.cx.v3.MatchIntentRespons"
+          + "e\"\252\001\202\323\344\223\002\243\001\"D/v3/{session=projects/*/loc"
+          + "ations/*/agents/*/sessions/*}:matchInten"
+          + "t:\001*ZX\"S/v3/{session=projects/*/location"
+          + "s/*/agents/*/environments/*/sessions/*}:"
+          + "matchIntent:\001*\022\325\002\n\rFulfillIntent\0223.googl"
+          + "e.cloud.dialogflow.cx.v3.FulfillIntentRe"
+          + "quest\0324.google.cloud.dialogflow.cx.v3.Fu"
+          + "lfillIntentResponse\"\330\001\202\323\344\223\002\321\001\"[/v3/{matc"
+          + "h_intent_request.session=projects/*/loca"
+          + "tions/*/agents/*/sessions/*}:fulfillInte"
+          + "nt:\001*Zo\"j/v3/{match_intent_request.sessi"
+          + "on=projects/*/locations/*/agents/*/envir"
+          + "onments/*/sessions/*}:fulfillIntent:\001*\032x"
+          + "\312A\031dialogflow.googleapis.com\322AYhttps://w"
+          + "ww.googleapis.com/auth/cloud-platform,ht"
+          + "tps://www.googleapis.com/auth/dialogflow"
+          + "B\364\002\n!com.google.cloud.dialogflow.cx.v3B\014"
+          + "SessionProtoP\001Z?google.golang.org/genpro"
+          + "to/googleapis/cloud/dialogflow/cx/v3;cx\370"
+          + "\001\001\242\002\002DF\252\002\035Google.Cloud.Dialogflow.Cx.V3\352"
+          + "A\324\001\n!dialogflow.googleapis.com/Session\022I"
+          + "projects/{project}/locations/{location}/"
+          + "agents/{agent}/sessions/{session}\022dproje"
+          + "cts/{project}/locations/{location}/agent"
+          + "s/{agent}/environments/{environment}/ses"
+          + "sions/{session}b\006proto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -366,6 +367,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "SessionEntityTypes",
               "Payload",
               "Parameters",
+              "CurrentPage",
               "DisableWebhook",
               "AnalyzeQueryTextSentiment",
               "WebhookHeaders",
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookProto.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookProto.java
index 68fff44a9..12d969188 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookProto.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookProto.java
@@ -164,109 +164,110 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
           + "\002\022/\n\013update_mask\030\002 \001(\0132\032.google.protobuf"
           + ".FieldMask\"^\n\024DeleteWebhookRequest\0227\n\004na"
           + "me\030\001 \001(\tB)\340A\002\372A#\n!dialogflow.googleapis."
-          + "com/Webhook\022\r\n\005force\030\002 \001(\010\"\323\t\n\016WebhookRe"
+          + "com/Webhook\022\r\n\005force\030\002 \001(\010\"\352\t\n\016WebhookRe"
           + "quest\022!\n\031detect_intent_response_id\030\001 \001(\t"
           + "\022\016\n\004text\030\n \001(\tH\000\022?\n\016trigger_intent\030\013 \001(\t"
           + "B%\372A\"\n dialogflow.googleapis.com/IntentH"
           + "\000\022\024\n\ntranscript\030\014 \001(\tH\000\022\027\n\rtrigger_event"
-          + "\030\016 \001(\tH\000\022W\n\020fulfillment_info\030\006 \001(\0132=.goo"
-          + "gle.cloud.dialogflow.cx.v3.WebhookReques"
-          + "t.FulfillmentInfo\022M\n\013intent_info\030\003 \001(\01328"
-          + ".google.cloud.dialogflow.cx.v3.WebhookRe"
-          + "quest.IntentInfo\022:\n\tpage_info\030\004 \001(\0132\'.go"
-          + "ogle.cloud.dialogflow.cx.v3.PageInfo\022@\n\014"
-          + "session_info\030\005 \001(\0132*.google.cloud.dialog"
-          + "flow.cx.v3.SessionInfo\022@\n\010messages\030\007 \003(\013"
-          + "2..google.cloud.dialogflow.cx.v3.Respons"
-          + "eMessage\022(\n\007payload\030\010 \001(\0132\027.google.proto"
-          + "buf.Struct\022h\n\031sentiment_analysis_result\030"
-          + "\t \001(\0132E.google.cloud.dialogflow.cx.v3.We"
-          + "bhookRequest.SentimentAnalysisResult\032\036\n\017"
-          + "FulfillmentInfo\022\013\n\003tag\030\001 \001(\t\032\273\003\n\nIntentI"
-          + "nfo\022B\n\023last_matched_intent\030\001 \001(\tB%\372A\"\n d"
-          + "ialogflow.googleapis.com/Intent\022\024\n\014displ"
-          + "ay_name\030\003 \001(\t\022\\\n\nparameters\030\002 \003(\0132H.goog"
-          + "le.cloud.dialogflow.cx.v3.WebhookRequest"
-          + ".IntentInfo.ParametersEntry\022\022\n\nconfidenc"
-          + "e\030\004 \001(\002\032^\n\024IntentParameterValue\022\026\n\016origi"
-          + "nal_value\030\001 \001(\t\022.\n\016resolved_value\030\002 \001(\0132"
-          + "\026.google.protobuf.Value\032\200\001\n\017ParametersEn"
-          + "try\022\013\n\003key\030\001 \001(\t\022\\\n\005value\030\002 \001(\0132M.google"
-          + ".cloud.dialogflow.cx.v3.WebhookRequest.I"
-          + "ntentInfo.IntentParameterValue:\0028\001\032;\n\027Se"
-          + "ntimentAnalysisResult\022\r\n\005score\030\001 \001(\002\022\021\n\t"
-          + "magnitude\030\002 \001(\002B\007\n\005query\"\257\005\n\017WebhookResp"
-          + "onse\022`\n\024fulfillment_response\030\001 \001(\0132B.goo"
-          + "gle.cloud.dialogflow.cx.v3.WebhookRespon"
-          + "se.FulfillmentResponse\022:\n\tpage_info\030\002 \001("
-          + "\0132\'.google.cloud.dialogflow.cx.v3.PageIn"
-          + "fo\022@\n\014session_info\030\003 \001(\0132*.google.cloud."
-          + "dialogflow.cx.v3.SessionInfo\022(\n\007payload\030"
-          + "\004 \001(\0132\027.google.protobuf.Struct\022:\n\013target"
-          + "_page\030\005 \001(\tB#\372A \n\036dialogflow.googleapis."
-          + "com/PageH\000\022:\n\013target_flow\030\006 \001(\tB#\372A \n\036di"
-          + "alogflow.googleapis.com/FlowH\000\032\213\002\n\023Fulfi"
-          + "llmentResponse\022@\n\010messages\030\001 \003(\0132..googl"
-          + "e.cloud.dialogflow.cx.v3.ResponseMessage"
-          + "\022h\n\016merge_behavior\030\002 \001(\0162P.google.cloud."
-          + "dialogflow.cx.v3.WebhookResponse.Fulfill"
-          + "mentResponse.MergeBehavior\"H\n\rMergeBehav"
-          + "ior\022\036\n\032MERGE_BEHAVIOR_UNSPECIFIED\020\000\022\n\n\006A"
-          + "PPEND\020\001\022\013\n\007REPLACE\020\002B\014\n\ntransition\"\235\004\n\010P"
-          + "ageInfo\0229\n\014current_page\030\001 \001(\tB#\372A \n\036dial"
-          + "ogflow.googleapis.com/Page\022C\n\tform_info\030"
-          + "\003 \001(\01320.google.cloud.dialogflow.cx.v3.Pa"
-          + "geInfo.FormInfo\032\220\003\n\010FormInfo\022V\n\016paramete"
-          + "r_info\030\002 \003(\0132>.google.cloud.dialogflow.c"
-          + "x.v3.PageInfo.FormInfo.ParameterInfo\032\253\002\n"
-          + "\rParameterInfo\022\024\n\014display_name\030\001 \001(\t\022\020\n\010"
-          + "required\030\002 \001(\010\022\\\n\005state\030\003 \001(\0162M.google.c"
-          + "loud.dialogflow.cx.v3.PageInfo.FormInfo."
-          + "ParameterInfo.ParameterState\022%\n\005value\030\004 "
-          + "\001(\0132\026.google.protobuf.Value\022\026\n\016just_coll"
-          + "ected\030\005 \001(\010\"U\n\016ParameterState\022\037\n\033PARAMET"
-          + "ER_STATE_UNSPECIFIED\020\000\022\t\n\005EMPTY\020\001\022\013\n\007INV"
-          + "ALID\020\002\022\n\n\006FILLED\020\003\"\341\001\n\013SessionInfo\0227\n\007se"
-          + "ssion\030\001 \001(\tB&\372A#\n!dialogflow.googleapis."
-          + "com/Session\022N\n\nparameters\030\002 \003(\0132:.google"
-          + ".cloud.dialogflow.cx.v3.SessionInfo.Para"
-          + "metersEntry\032I\n\017ParametersEntry\022\013\n\003key\030\001 "
-          + "\001(\t\022%\n\005value\030\002 \001(\0132\026.google.protobuf.Val"
-          + "ue:\0028\0012\267\010\n\010Webhooks\022\277\001\n\014ListWebhooks\0222.g"
-          + "oogle.cloud.dialogflow.cx.v3.ListWebhook"
-          + "sRequest\0323.google.cloud.dialogflow.cx.v3"
-          + ".ListWebhooksResponse\"F\202\323\344\223\0027\0225/v3/{pare"
-          + "nt=projects/*/locations/*/agents/*}/webh"
-          + "ooks\332A\006parent\022\254\001\n\nGetWebhook\0220.google.cl"
-          + "oud.dialogflow.cx.v3.GetWebhookRequest\032&"
-          + ".google.cloud.dialogflow.cx.v3.Webhook\"D"
-          + "\202\323\344\223\0027\0225/v3/{name=projects/*/locations/*"
-          + "/agents/*/webhooks/*}\332A\004name\022\305\001\n\rCreateW"
-          + "ebhook\0223.google.cloud.dialogflow.cx.v3.C"
-          + "reateWebhookRequest\032&.google.cloud.dialo"
-          + "gflow.cx.v3.Webhook\"W\202\323\344\223\002@\"5/v3/{parent"
-          + "=projects/*/locations/*/agents/*}/webhoo"
-          + "ks:\007webhook\332A\016parent,webhook\022\322\001\n\rUpdateW"
-          + "ebhook\0223.google.cloud.dialogflow.cx.v3.U"
-          + "pdateWebhookRequest\032&.google.cloud.dialo"
-          + "gflow.cx.v3.Webhook\"d\202\323\344\223\002H2=/v3/{webhoo"
-          + "k.name=projects/*/locations/*/agents/*/w"
-          + "ebhooks/*}:\007webhook\332A\023webhook,update_mas"
-          + "k\022\242\001\n\rDeleteWebhook\0223.google.cloud.dialo"
-          + "gflow.cx.v3.DeleteWebhookRequest\032\026.googl"
-          + "e.protobuf.Empty\"D\202\323\344\223\0027*5/v3/{name=proj"
-          + "ects/*/locations/*/agents/*/webhooks/*}\332"
-          + "A\004name\032x\312A\031dialogflow.googleapis.com\322AYh"
-          + "ttps://www.googleapis.com/auth/cloud-pla"
-          + "tform,https://www.googleapis.com/auth/di"
-          + "alogflowB\233\002\n!com.google.cloud.dialogflow"
-          + ".cx.v3B\014WebhookProtoP\001Z?google.golang.or"
-          + "g/genproto/googleapis/cloud/dialogflow/c"
-          + "x/v3;cx\370\001\001\242\002\002DF\252\002\035Google.Cloud.Dialogflo"
-          + "w.Cx.V3\352A|\n\'servicedirectory.googleapis."
-          + "com/Service\022Qprojects/{project}/location"
-          + "s/{location}/namespaces/{namespace}/serv"
-          + "ices/{service}b\006proto3"
+          + "\030\016 \001(\tH\000\022\025\n\rlanguage_code\030\017 \001(\t\022W\n\020fulfi"
+          + "llment_info\030\006 \001(\0132=.google.cloud.dialogf"
+          + "low.cx.v3.WebhookRequest.FulfillmentInfo"
+          + "\022M\n\013intent_info\030\003 \001(\01328.google.cloud.dia"
+          + "logflow.cx.v3.WebhookRequest.IntentInfo\022"
+          + ":\n\tpage_info\030\004 \001(\0132\'.google.cloud.dialog"
+          + "flow.cx.v3.PageInfo\022@\n\014session_info\030\005 \001("
+          + "\0132*.google.cloud.dialogflow.cx.v3.Sessio"
+          + "nInfo\022@\n\010messages\030\007 \003(\0132..google.cloud.d"
+          + "ialogflow.cx.v3.ResponseMessage\022(\n\007paylo"
+          + "ad\030\010 \001(\0132\027.google.protobuf.Struct\022h\n\031sen"
+          + "timent_analysis_result\030\t \001(\0132E.google.cl"
+          + "oud.dialogflow.cx.v3.WebhookRequest.Sent"
+          + "imentAnalysisResult\032\036\n\017FulfillmentInfo\022\013"
+          + "\n\003tag\030\001 \001(\t\032\273\003\n\nIntentInfo\022B\n\023last_match"
+          + "ed_intent\030\001 \001(\tB%\372A\"\n dialogflow.googlea"
+          + "pis.com/Intent\022\024\n\014display_name\030\003 \001(\t\022\\\n\n"
+          + "parameters\030\002 \003(\0132H.google.cloud.dialogfl"
+          + "ow.cx.v3.WebhookRequest.IntentInfo.Param"
+          + "etersEntry\022\022\n\nconfidence\030\004 \001(\002\032^\n\024Intent"
+          + "ParameterValue\022\026\n\016original_value\030\001 \001(\t\022."
+          + "\n\016resolved_value\030\002 \001(\0132\026.google.protobuf"
+          + ".Value\032\200\001\n\017ParametersEntry\022\013\n\003key\030\001 \001(\t\022"
+          + "\\\n\005value\030\002 \001(\0132M.google.cloud.dialogflow"
+          + ".cx.v3.WebhookRequest.IntentInfo.IntentP"
+          + "arameterValue:\0028\001\032;\n\027SentimentAnalysisRe"
+          + "sult\022\r\n\005score\030\001 \001(\002\022\021\n\tmagnitude\030\002 \001(\002B\007"
+          + "\n\005query\"\257\005\n\017WebhookResponse\022`\n\024fulfillme"
+          + "nt_response\030\001 \001(\0132B.google.cloud.dialogf"
+          + "low.cx.v3.WebhookResponse.FulfillmentRes"
+          + "ponse\022:\n\tpage_info\030\002 \001(\0132\'.google.cloud."
+          + "dialogflow.cx.v3.PageInfo\022@\n\014session_inf"
+          + "o\030\003 \001(\0132*.google.cloud.dialogflow.cx.v3."
+          + "SessionInfo\022(\n\007payload\030\004 \001(\0132\027.google.pr"
+          + "otobuf.Struct\022:\n\013target_page\030\005 \001(\tB#\372A \n"
+          + "\036dialogflow.googleapis.com/PageH\000\022:\n\013tar"
+          + "get_flow\030\006 \001(\tB#\372A \n\036dialogflow.googleap"
+          + "is.com/FlowH\000\032\213\002\n\023FulfillmentResponse\022@\n"
+          + "\010messages\030\001 \003(\0132..google.cloud.dialogflo"
+          + "w.cx.v3.ResponseMessage\022h\n\016merge_behavio"
+          + "r\030\002 \001(\0162P.google.cloud.dialogflow.cx.v3."
+          + "WebhookResponse.FulfillmentResponse.Merg"
+          + "eBehavior\"H\n\rMergeBehavior\022\036\n\032MERGE_BEHA"
+          + "VIOR_UNSPECIFIED\020\000\022\n\n\006APPEND\020\001\022\013\n\007REPLAC"
+          + "E\020\002B\014\n\ntransition\"\235\004\n\010PageInfo\0229\n\014curren"
+          + "t_page\030\001 \001(\tB#\372A \n\036dialogflow.googleapis"
+          + ".com/Page\022C\n\tform_info\030\003 \001(\01320.google.cl"
+          + "oud.dialogflow.cx.v3.PageInfo.FormInfo\032\220"
+          + "\003\n\010FormInfo\022V\n\016parameter_info\030\002 \003(\0132>.go"
+          + "ogle.cloud.dialogflow.cx.v3.PageInfo.For"
+          + "mInfo.ParameterInfo\032\253\002\n\rParameterInfo\022\024\n"
+          + "\014display_name\030\001 \001(\t\022\020\n\010required\030\002 \001(\010\022\\\n"
+          + "\005state\030\003 \001(\0162M.google.cloud.dialogflow.c"
+          + "x.v3.PageInfo.FormInfo.ParameterInfo.Par"
+          + "ameterState\022%\n\005value\030\004 \001(\0132\026.google.prot"
+          + "obuf.Value\022\026\n\016just_collected\030\005 \001(\010\"U\n\016Pa"
+          + "rameterState\022\037\n\033PARAMETER_STATE_UNSPECIF"
+          + "IED\020\000\022\t\n\005EMPTY\020\001\022\013\n\007INVALID\020\002\022\n\n\006FILLED\020"
+          + "\003\"\341\001\n\013SessionInfo\0227\n\007session\030\001 \001(\tB&\372A#\n"
+          + "!dialogflow.googleapis.com/Session\022N\n\npa"
+          + "rameters\030\002 \003(\0132:.google.cloud.dialogflow"
+          + ".cx.v3.SessionInfo.ParametersEntry\032I\n\017Pa"
+          + "rametersEntry\022\013\n\003key\030\001 \001(\t\022%\n\005value\030\002 \001("
+          + "\0132\026.google.protobuf.Value:\0028\0012\267\010\n\010Webhoo"
+          + "ks\022\277\001\n\014ListWebhooks\0222.google.cloud.dialo"
+          + "gflow.cx.v3.ListWebhooksRequest\0323.google"
+          + ".cloud.dialogflow.cx.v3.ListWebhooksResp"
+          + "onse\"F\202\323\344\223\0027\0225/v3/{parent=projects/*/loc"
+          + "ations/*/agents/*}/webhooks\332A\006parent\022\254\001\n"
+          + "\nGetWebhook\0220.google.cloud.dialogflow.cx"
+          + ".v3.GetWebhookRequest\032&.google.cloud.dia"
+          + "logflow.cx.v3.Webhook\"D\202\323\344\223\0027\0225/v3/{name"
+          + "=projects/*/locations/*/agents/*/webhook"
+          + "s/*}\332A\004name\022\305\001\n\rCreateWebhook\0223.google.c"
+          + "loud.dialogflow.cx.v3.CreateWebhookReque"
+          + "st\032&.google.cloud.dialogflow.cx.v3.Webho"
+          + "ok\"W\202\323\344\223\002@\"5/v3/{parent=projects/*/locat"
+          + "ions/*/agents/*}/webhooks:\007webhook\332A\016par"
+          + "ent,webhook\022\322\001\n\rUpdateWebhook\0223.google.c"
+          + "loud.dialogflow.cx.v3.UpdateWebhookReque"
+          + "st\032&.google.cloud.dialogflow.cx.v3.Webho"
+          + "ok\"d\202\323\344\223\002H2=/v3/{webhook.name=projects/*"
+          + "/locations/*/agents/*/webhooks/*}:\007webho"
+          + "ok\332A\023webhook,update_mask\022\242\001\n\rDeleteWebho"
+          + "ok\0223.google.cloud.dialogflow.cx.v3.Delet"
+          + "eWebhookRequest\032\026.google.protobuf.Empty\""
+          + "D\202\323\344\223\0027*5/v3/{name=projects/*/locations/"
+          + "*/agents/*/webhooks/*}\332A\004name\032x\312A\031dialog"
+          + "flow.googleapis.com\322AYhttps://www.google"
+          + "apis.com/auth/cloud-platform,https://www"
+          + ".googleapis.com/auth/dialogflowB\233\002\n!com."
+          + "google.cloud.dialogflow.cx.v3B\014WebhookPr"
+          + "otoP\001Z?google.golang.org/genproto/google"
+          + "apis/cloud/dialogflow/cx/v3;cx\370\001\001\242\002\002DF\252\002"
+          + "\035Google.Cloud.Dialogflow.Cx.V3\352A|\n\'servi"
+          + "cedirectory.googleapis.com/Service\022Qproj"
+          + "ects/{project}/locations/{location}/name"
+          + "spaces/{namespace}/services/{service}b\006p"
+          + "roto3"
     };
     descriptor =
         com.google.protobuf.Descriptors.FileDescriptor.internalBuildGeneratedFileFrom(
@@ -367,6 +368,7 @@ public static com.google.protobuf.Descriptors.FileDescriptor getDescriptor() {
               "TriggerIntent",
               "Transcript",
               "TriggerEvent",
+              "LanguageCode",
               "FulfillmentInfo",
               "IntentInfo",
               "PageInfo",
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequest.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequest.java
index 4752a869a..811697319 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequest.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequest.java
@@ -40,6 +40,7 @@ private WebhookRequest(com.google.protobuf.GeneratedMessageV3.Builder<?> builder
 
   private WebhookRequest() {
     detectIntentResponseId_ = "";
+    languageCode_ = "";
     messages_ = java.util.Collections.emptyList();
   }
 
@@ -221,6 +222,13 @@ private WebhookRequest(
               query_ = s;
               break;
             }
+          case 122:
+            {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              languageCode_ = s;
+              break;
+            }
           default:
             {
               if (!parseUnknownField(input, unknownFields, extensionRegistry, tag)) {
@@ -4591,6 +4599,57 @@ public com.google.protobuf.ByteString getTriggerEventBytes() {
     }
   }
 
+  public static final int LANGUAGE_CODE_FIELD_NUMBER = 15;
+  private volatile java.lang.Object languageCode_;
+  /**
+   *
+   *
+   * <pre>
+   * The language code specified in the [original
+   * request][QueryInput.language_code].
+   * </pre>
+   *
+   * <code>string language_code = 15;</code>
+   *
+   * @return The languageCode.
+   */
+  @java.lang.Override
+  public java.lang.String getLanguageCode() {
+    java.lang.Object ref = languageCode_;
+    if (ref instanceof java.lang.String) {
+      return (java.lang.String) ref;
+    } else {
+      com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+      java.lang.String s = bs.toStringUtf8();
+      languageCode_ = s;
+      return s;
+    }
+  }
+  /**
+   *
+   *
+   * <pre>
+   * The language code specified in the [original
+   * request][QueryInput.language_code].
+   * </pre>
+   *
+   * <code>string language_code = 15;</code>
+   *
+   * @return The bytes for languageCode.
+   */
+  @java.lang.Override
+  public com.google.protobuf.ByteString getLanguageCodeBytes() {
+    java.lang.Object ref = languageCode_;
+    if (ref instanceof java.lang.String) {
+      com.google.protobuf.ByteString b =
+          com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+      languageCode_ = b;
+      return b;
+    } else {
+      return (com.google.protobuf.ByteString) ref;
+    }
+  }
+
   public static final int FULFILLMENT_INFO_FIELD_NUMBER = 6;
   private com.google.cloud.dialogflow.cx.v3.WebhookRequest.FulfillmentInfo fulfillmentInfo_;
   /**
@@ -5028,6 +5087,9 @@ public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io
     if (queryCase_ == 14) {
       com.google.protobuf.GeneratedMessageV3.writeString(output, 14, query_);
     }
+    if (!getLanguageCodeBytes().isEmpty()) {
+      com.google.protobuf.GeneratedMessageV3.writeString(output, 15, languageCode_);
+    }
     unknownFields.writeTo(output);
   }
 
@@ -5074,6 +5136,9 @@ public int getSerializedSize() {
     if (queryCase_ == 14) {
       size += com.google.protobuf.GeneratedMessageV3.computeStringSize(14, query_);
     }
+    if (!getLanguageCodeBytes().isEmpty()) {
+      size += com.google.protobuf.GeneratedMessageV3.computeStringSize(15, languageCode_);
+    }
     size += unknownFields.getSerializedSize();
     memoizedSize = size;
     return size;
@@ -5091,6 +5156,7 @@ public boolean equals(final java.lang.Object obj) {
         (com.google.cloud.dialogflow.cx.v3.WebhookRequest) obj;
 
     if (!getDetectIntentResponseId().equals(other.getDetectIntentResponseId())) return false;
+    if (!getLanguageCode().equals(other.getLanguageCode())) return false;
     if (hasFulfillmentInfo() != other.hasFulfillmentInfo()) return false;
     if (hasFulfillmentInfo()) {
       if (!getFulfillmentInfo().equals(other.getFulfillmentInfo())) return false;
@@ -5146,6 +5212,8 @@ public int hashCode() {
     hash = (19 * hash) + getDescriptor().hashCode();
     hash = (37 * hash) + DETECT_INTENT_RESPONSE_ID_FIELD_NUMBER;
     hash = (53 * hash) + getDetectIntentResponseId().hashCode();
+    hash = (37 * hash) + LANGUAGE_CODE_FIELD_NUMBER;
+    hash = (53 * hash) + getLanguageCode().hashCode();
     if (hasFulfillmentInfo()) {
       hash = (37 * hash) + FULFILLMENT_INFO_FIELD_NUMBER;
       hash = (53 * hash) + getFulfillmentInfo().hashCode();
@@ -5344,6 +5412,8 @@ public Builder clear() {
       super.clear();
       detectIntentResponseId_ = "";
 
+      languageCode_ = "";
+
       if (fulfillmentInfoBuilder_ == null) {
         fulfillmentInfo_ = null;
       } else {
@@ -5429,6 +5499,7 @@ public com.google.cloud.dialogflow.cx.v3.WebhookRequest buildPartial() {
       if (queryCase_ == 14) {
         result.query_ = query_;
       }
+      result.languageCode_ = languageCode_;
       if (fulfillmentInfoBuilder_ == null) {
         result.fulfillmentInfo_ = fulfillmentInfo_;
       } else {
@@ -5523,6 +5594,10 @@ public Builder mergeFrom(com.google.cloud.dialogflow.cx.v3.WebhookRequest other)
         detectIntentResponseId_ = other.detectIntentResponseId_;
         onChanged();
       }
+      if (!other.getLanguageCode().isEmpty()) {
+        languageCode_ = other.languageCode_;
+        onChanged();
+      }
       if (other.hasFulfillmentInfo()) {
         mergeFulfillmentInfo(other.getFulfillmentInfo());
       }
@@ -6330,6 +6405,117 @@ public Builder setTriggerEventBytes(com.google.protobuf.ByteString value) {
       return this;
     }
 
+    private java.lang.Object languageCode_ = "";
+    /**
+     *
+     *
+     * <pre>
+     * The language code specified in the [original
+     * request][QueryInput.language_code].
+     * </pre>
+     *
+     * <code>string language_code = 15;</code>
+     *
+     * @return The languageCode.
+     */
+    public java.lang.String getLanguageCode() {
+      java.lang.Object ref = languageCode_;
+      if (!(ref instanceof java.lang.String)) {
+        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        languageCode_ = s;
+        return s;
+      } else {
+        return (java.lang.String) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The language code specified in the [original
+     * request][QueryInput.language_code].
+     * </pre>
+     *
+     * <code>string language_code = 15;</code>
+     *
+     * @return The bytes for languageCode.
+     */
+    public com.google.protobuf.ByteString getLanguageCodeBytes() {
+      java.lang.Object ref = languageCode_;
+      if (ref instanceof String) {
+        com.google.protobuf.ByteString b =
+            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
+        languageCode_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The language code specified in the [original
+     * request][QueryInput.language_code].
+     * </pre>
+     *
+     * <code>string language_code = 15;</code>
+     *
+     * @param value The languageCode to set.
+     * @return This builder for chaining.
+     */
+    public Builder setLanguageCode(java.lang.String value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+
+      languageCode_ = value;
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The language code specified in the [original
+     * request][QueryInput.language_code].
+     * </pre>
+     *
+     * <code>string language_code = 15;</code>
+     *
+     * @return This builder for chaining.
+     */
+    public Builder clearLanguageCode() {
+
+      languageCode_ = getDefaultInstance().getLanguageCode();
+      onChanged();
+      return this;
+    }
+    /**
+     *
+     *
+     * <pre>
+     * The language code specified in the [original
+     * request][QueryInput.language_code].
+     * </pre>
+     *
+     * <code>string language_code = 15;</code>
+     *
+     * @param value The bytes for languageCode to set.
+     * @return This builder for chaining.
+     */
+    public Builder setLanguageCodeBytes(com.google.protobuf.ByteString value) {
+      if (value == null) {
+        throw new NullPointerException();
+      }
+      checkByteStringIsUtf8(value);
+
+      languageCode_ = value;
+      onChanged();
+      return this;
+    }
+
     private com.google.cloud.dialogflow.cx.v3.WebhookRequest.FulfillmentInfo fulfillmentInfo_;
     private com.google.protobuf.SingleFieldBuilderV3<
             com.google.cloud.dialogflow.cx.v3.WebhookRequest.FulfillmentInfo,
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequestOrBuilder.java b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequestOrBuilder.java
index acd6013db..e3683c1b8 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequestOrBuilder.java
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/java/com/google/cloud/dialogflow/cx/v3/WebhookRequestOrBuilder.java
@@ -216,6 +216,33 @@ public interface WebhookRequestOrBuilder
    */
   com.google.protobuf.ByteString getTriggerEventBytes();
 
+  /**
+   *
+   *
+   * <pre>
+   * The language code specified in the [original
+   * request][QueryInput.language_code].
+   * </pre>
+   *
+   * <code>string language_code = 15;</code>
+   *
+   * @return The languageCode.
+   */
+  java.lang.String getLanguageCode();
+  /**
+   *
+   *
+   * <pre>
+   * The language code specified in the [original
+   * request][QueryInput.language_code].
+   * </pre>
+   *
+   * <code>string language_code = 15;</code>
+   *
+   * @return The bytes for languageCode.
+   */
+  com.google.protobuf.ByteString getLanguageCodeBytes();
+
   /**
    *
    *
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/flow.proto b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/flow.proto
index 7560e77a4..7b253538c 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/flow.proto
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/flow.proto
@@ -225,6 +225,20 @@ message Flow {
   // get executed, with the rest being ignored.
   repeated EventHandler event_handlers = 10;
 
+  // A flow's transition route group serve two purposes:
+  //
+  // *   They are responsible for matching the user's first utterances in the
+  // flow.
+  // *   They are inherited by every page's [transition
+  // route groups][Page.transition_route_groups]. Transition route groups
+  // defined in the page have higher priority than those defined in the flow.
+  //
+  // Format:`projects/<Project ID>/locations/<Location ID>/agents/<Agent
+  // ID>/flows/<Flow ID>/transitionRouteGroups/<TransitionRouteGroup ID>`.
+  repeated string transition_route_groups = 15 [(google.api.resource_reference) = {
+                                                  type: "dialogflow.googleapis.com/TransitionRouteGroup"
+                                                }];
+
   // NLU related settings of the flow.
   NluSettings nlu_settings = 11;
 }
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/intent.proto b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/intent.proto
index 1e2924ff8..f4f4c6184 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/intent.proto
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/intent.proto
@@ -199,7 +199,7 @@ message Intent {
   // fallback intents act as negative examples that triggers no-match event.
   bool is_fallback = 6;
 
-  // Optional. The key/value metadata to label an intent. Labels can contain
+  // The key/value metadata to label an intent. Labels can contain
   // lowercase letters, digits and the symbols '-' and '_'. International
   // characters are allowed, including letters from unicase alphabets. Keys must
   // start with a letter. Keys and values can be no longer than 63 characters
@@ -211,11 +211,11 @@ message Intent {
   // * sys.contextual
   // The above labels do not require value. "sys.head" means the intent is a
   // head intent. "sys.contextual" means the intent is a contextual intent.
-  map<string, string> labels = 7 [(google.api.field_behavior) = OPTIONAL];
+  map<string, string> labels = 7;
 
-  // Optional. Human readable description for better understanding an intent like its
+  // Human readable description for better understanding an intent like its
   // scope, content, result etc. Maximum character limit: 140 characters.
-  string description = 8 [(google.api.field_behavior) = OPTIONAL];
+  string description = 8;
 }
 
 // The request message for [Intents.ListIntents][google.cloud.dialogflow.cx.v3.Intents.ListIntents].
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/session.proto b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/session.proto
index b2d6c049b..8d5763736 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/session.proto
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/session.proto
@@ -388,6 +388,21 @@ message QueryParameters {
   //     -   Else: parameter value
   google.protobuf.Struct parameters = 5;
 
+  // The unique identifier of the [page][google.cloud.dialogflow.cx.v3.Page] to override the [current
+  // page][QueryResult.current_page] in the session. Format: `projects/<Project
+  // ID>/locations/<Location ID>/agents/<Agent ID>/pages/<page ID>`.
+  //
+  // If `current_page` is specified, the previous state of the session will be
+  // ignored by Dialogflow, including the [previous
+  // page][QueryResult.current_page] and the [previous session
+  // parameters][QueryResult.parameters].
+  // In most cases, [current_page][google.cloud.dialogflow.cx.v3.QueryParameters.current_page] and
+  // [parameters][google.cloud.dialogflow.cx.v3.QueryParameters.parameters] should be configured together to
+  // direct a session to a specific state.
+  string current_page = 6 [(google.api.resource_reference) = {
+                             type: "dialogflow.googleapis.com/Page"
+                           }];
+
   // Whether to disable webhook calls for this request.
   bool disable_webhook = 7;
 
diff --git a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/webhook.proto b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/webhook.proto
index 6d367b3ef..3424d9c21 100644
--- a/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/webhook.proto
+++ b/proto-google-cloud-dialogflow-cx-v3/src/main/proto/google/cloud/dialogflow/cx/v3/webhook.proto
@@ -314,6 +314,10 @@ message WebhookRequest {
     string trigger_event = 14;
   }
 
+  // The language code specified in the [original
+  // request][QueryInput.language_code].
+  string language_code = 15;
+
   // Always present. Information about the fulfillment that triggered this
   // webhook call.
   FulfillmentInfo fulfillment_info = 6;
diff --git a/synth.metadata b/synth.metadata
index fc288d270..e3dc5aa16 100644
--- a/synth.metadata
+++ b/synth.metadata
@@ -4,23 +4,23 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-dialogflow-cx.git",
-        "sha": "f745beb41ed7844909c7acd43235a490faefc619"
+        "sha": "43cdc986d04472760a42f61e8318090bd5565052"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "35593f2d62a2e6a11ad74ea64a664159939f52dd",
-        "internalRef": "364838477"
+        "sha": "163ed6c0450949662bf2e6997eb7e0782cd4d800",
+        "internalRef": "367042726"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "35593f2d62a2e6a11ad74ea64a664159939f52dd",
-        "internalRef": "364838477"
+        "sha": "163ed6c0450949662bf2e6997eb7e0782cd4d800",
+        "internalRef": "367042726"
       }
     },
     {