diff --git a/metadata/V3/NotificationService.php b/metadata/V3/NotificationService.php
index 6a117d2..d242ffa 100644
--- a/metadata/V3/NotificationService.php
+++ b/metadata/V3/NotificationService.php
@@ -18,16 +18,14 @@ public static function initOnce() {
         \GPBMetadata\Google\Monitoring\V3\Notification::initOnce();
         \GPBMetadata\Google\Protobuf\GPBEmpty::initOnce();
         \GPBMetadata\Google\Protobuf\FieldMask::initOnce();
-        \GPBMetadata\Google\Protobuf\Struct::initOnce();
         \GPBMetadata\Google\Protobuf\Timestamp::initOnce();
         $pool->internalAddGeneratedFile(hex2bin(
-            "0a891e0a2f676f6f676c652f6d6f6e69746f72696e672f76332f6e6f7469" .
+            "0aeb1d0a2f676f6f676c652f6d6f6e69746f72696e672f76332f6e6f7469" .
             "6669636174696f6e5f736572766963652e70726f746f1214676f6f676c65" .
             "2e6d6f6e69746f72696e672e76331a27676f6f676c652f6d6f6e69746f72" .
             "696e672f76332f6e6f74696669636174696f6e2e70726f746f1a1b676f6f" .
             "676c652f70726f746f6275662f656d7074792e70726f746f1a20676f6f67" .
-            "6c652f70726f746f6275662f6669656c645f6d61736b2e70726f746f1a1c" .
-            "676f6f676c652f70726f746f6275662f7374727563742e70726f746f1a1f" .
+            "6c652f70726f746f6275662f6669656c645f6d61736b2e70726f746f1a1f" .
             "676f6f676c652f70726f746f6275662f74696d657374616d702e70726f74" .
             "6f22600a294c6973744e6f74696669636174696f6e4368616e6e656c4465" .
             "7363726970746f727352657175657374120c0a046e616d65180420012809" .
diff --git a/metadata/V3/Uptime.php b/metadata/V3/Uptime.php
index 6fa0eed..b22e51f 100644
--- a/metadata/V3/Uptime.php
+++ b/metadata/V3/Uptime.php
@@ -17,70 +17,70 @@ public static function initOnce() {
         \GPBMetadata\Google\Api\MonitoredResource::initOnce();
         \GPBMetadata\Google\Protobuf\Duration::initOnce();
         $pool->internalAddGeneratedFile(hex2bin(
-            "0af20e0a21676f6f676c652f6d6f6e69746f72696e672f76332f75707469" .
+            "0af30e0a21676f6f676c652f6d6f6e69746f72696e672f76332f75707469" .
             "6d652e70726f746f1214676f6f676c652e6d6f6e69746f72696e672e7633" .
             "1a1e676f6f676c652f70726f746f6275662f6475726174696f6e2e70726f" .
-            "746f22710a0f496e7465726e616c436865636b6572120c0a046e616d6518" .
-            "012001280912140a0c646973706c61795f6e616d65180220012809120f0a" .
-            "076e6574776f726b18032001280912100a086763705f7a6f6e6518042001" .
-            "280912170a0f706565725f70726f6a6563745f696418062001280922c109" .
-            "0a11557074696d65436865636b436f6e666967120c0a046e616d65180120" .
-            "01280912140a0c646973706c61795f6e616d65180220012809123b0a126d" .
-            "6f6e69746f7265645f7265736f7572636518032001280b321d2e676f6f67" .
-            "6c652e6170692e4d6f6e69746f7265645265736f757263654800124f0a0e" .
-            "7265736f757263655f67726f757018042001280b32352e676f6f676c652e" .
-            "6d6f6e69746f72696e672e76332e557074696d65436865636b436f6e6669" .
-            "672e5265736f7572636547726f7570480012470a0a687474705f63686563" .
-            "6b18052001280b32312e676f6f676c652e6d6f6e69746f72696e672e7633" .
-            "2e557074696d65436865636b436f6e6669672e48747470436865636b4801" .
-            "12450a097463705f636865636b18062001280b32302e676f6f676c652e6d" .
-            "6f6e69746f72696e672e76332e557074696d65436865636b436f6e666967" .
-            "2e546370436865636b480112290a06706572696f6418072001280b32192e" .
-            "676f6f676c652e70726f746f6275662e4475726174696f6e122a0a077469" .
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-            "4475726174696f6e12500a10636f6e74656e745f6d617463686572731809" .
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-            "12410a1073656c65637465645f726567696f6e73180a2003280e32272e67" .
-            "6f6f676c652e6d6f6e69746f72696e672e76332e557074696d6543686563" .
-            "6b526567696f6e12130a0b69735f696e7465726e616c180f200128081240" .
-            "0a11696e7465726e616c5f636865636b657273180e2003280b32252e676f" .
-            "6f676c652e6d6f6e69746f72696e672e76332e496e7465726e616c436865" .
-            "636b65721a610a0d5265736f7572636547726f757012100a0867726f7570" .
-            "5f6964180120012809123e0a0d7265736f757263655f7479706518022001" .
-            "280e32272e676f6f676c652e6d6f6e69746f72696e672e76332e47726f75" .
-            "705265736f75726365547970651ae4020a0948747470436865636b120f0a" .
-            "077573655f73736c180120012808120c0a0470617468180220012809120c" .
-            "0a04706f727418032001280512580a09617574685f696e666f1804200128" .
-            "0b32452e676f6f676c652e6d6f6e69746f72696e672e76332e557074696d" .
-            "65436865636b436f6e6669672e48747470436865636b2e42617369634175" .
-            "7468656e7469636174696f6e12140a0c6d61736b5f686561646572731805" .
-            "20012808124f0a076865616465727318062003280b323e2e676f6f676c65" .
+            "746f22720a0f496e7465726e616c436865636b657212120a0a70726f6a65" .
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+            "090a11557074696d65436865636b436f6e666967120c0a046e616d651801" .
+            "2001280912140a0c646973706c61795f6e616d65180220012809123b0a12" .
+            "6d6f6e69746f7265645f7265736f7572636518032001280b321d2e676f6f" .
+            "676c652e6170692e4d6f6e69746f7265645265736f757263654800124f0a" .
+            "0e7265736f757263655f67726f757018042001280b32352e676f6f676c65" .
             "2e6d6f6e69746f72696e672e76332e557074696d65436865636b436f6e66" .
-            "69672e48747470436865636b2e48656164657273456e7472791a390a1342" .
-            "6173696341757468656e7469636174696f6e12100a08757365726e616d65" .
-            "18012001280912100a0870617373776f72641802200128091a2e0a0c4865" .
-            "6164657273456e747279120b0a036b6579180120012809120d0a0576616c" .
-            "75651802200128093a0238011a180a08546370436865636b120c0a04706f" .
-            "72741801200128051a210a0e436f6e74656e744d617463686572120f0a07" .
-            "636f6e74656e74180120012809420a0a087265736f7572636542140a1263" .
-            "6865636b5f726571756573745f74797065226e0a0d557074696d65436865" .
-            "636b497012370a06726567696f6e18012001280e32272e676f6f676c652e" .
-            "6d6f6e69746f72696e672e76332e557074696d65436865636b526567696f" .
-            "6e12100a086c6f636174696f6e18022001280912120a0a69705f61646472" .
-            "6573731803200128092a650a11557074696d65436865636b526567696f6e" .
-            "12160a12524547494f4e5f554e535045434946494544100012070a035553" .
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-            "636f6d2e676f6f676c652e6d6f6e69746f72696e672e7633420b55707469" .
-            "6d6550726f746f50015a3e676f6f676c652e676f6c616e672e6f72672f67" .
-            "656e70726f746f2f676f6f676c65617069732f6d6f6e69746f72696e672f" .
-            "76333b6d6f6e69746f72696e67aa021a476f6f676c652e436c6f75642e4d" .
-            "6f6e69746f72696e672e5633ca021a476f6f676c655c436c6f75645c4d6f" .
-            "6e69746f72696e675c5633620670726f746f33"
+            "69672e5265736f7572636547726f7570480012470a0a687474705f636865" .
+            "636b18052001280b32312e676f6f676c652e6d6f6e69746f72696e672e76" .
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+            "0112450a097463705f636865636b18062001280b32302e676f6f676c652e" .
+            "6d6f6e69746f72696e672e76332e557074696d65436865636b436f6e6669" .
+            "672e546370436865636b480112290a06706572696f6418072001280b3219" .
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+            "636b526567696f6e12130a0b69735f696e7465726e616c180f2001280812" .
+            "400a11696e7465726e616c5f636865636b657273180e2003280b32252e67" .
+            "6f6f676c652e6d6f6e69746f72696e672e76332e496e7465726e616c4368" .
+            "65636b65721a610a0d5265736f7572636547726f757012100a0867726f75" .
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+            "75705265736f75726365547970651ae4020a0948747470436865636b120f" .
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+            "0c0a04706f727418032001280512580a09617574685f696e666f18042001" .
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+            "6d65436865636b436f6e6669672e48747470436865636b2e426173696341" .
+            "757468656e7469636174696f6e12140a0c6d61736b5f6865616465727318" .
+            "0520012808124f0a076865616465727318062003280b323e2e676f6f676c" .
+            "652e6d6f6e69746f72696e672e76332e557074696d65436865636b436f6e" .
+            "6669672e48747470436865636b2e48656164657273456e7472791a390a13" .
+            "426173696341757468656e7469636174696f6e12100a08757365726e616d" .
+            "6518012001280912100a0870617373776f72641802200128091a2e0a0c48" .
+            "656164657273456e747279120b0a036b6579180120012809120d0a057661" .
+            "6c75651802200128093a0238011a180a08546370436865636b120c0a0470" .
+            "6f72741801200128051a210a0e436f6e74656e744d617463686572120f0a" .
+            "07636f6e74656e74180120012809420a0a087265736f7572636542140a12" .
+            "636865636b5f726571756573745f74797065226e0a0d557074696d654368" .
+            "65636b497012370a06726567696f6e18012001280e32272e676f6f676c65" .
+            "2e6d6f6e69746f72696e672e76332e557074696d65436865636b52656769" .
+            "6f6e12100a086c6f636174696f6e18022001280912120a0a69705f616464" .
+            "726573731803200128092a650a11557074696d65436865636b526567696f" .
+            "6e12160a12524547494f4e5f554e535045434946494544100012070a0355" .
+            "53411001120a0a064555524f5045100212110a0d534f5554485f414d4552" .
+            "494341100312100a0c415349415f5041434946494310042a5b0a1147726f" .
+            "75705265736f7572636554797065121d0a195245534f555243455f545950" .
+            "455f554e5350454349464945441000120c0a08494e5354414e4345100112" .
+            "190a154157535f454c425f4c4f41445f42414c414e434552100242a3010a" .
+            "18636f6d2e676f6f676c652e6d6f6e69746f72696e672e7633420b557074" .
+            "696d6550726f746f50015a3e676f6f676c652e676f6c616e672e6f72672f" .
+            "67656e70726f746f2f676f6f676c65617069732f6d6f6e69746f72696e67" .
+            "2f76333b6d6f6e69746f72696e67aa021a476f6f676c652e436c6f75642e" .
+            "4d6f6e69746f72696e672e5633ca021a476f6f676c655c436c6f75645c4d" .
+            "6f6e69746f72696e675c5633620670726f746f33"
         ));
 
         static::$is_initialized = true;
diff --git a/src/V3/AlertPolicyServiceGrpcClient.php b/src/V3/AlertPolicyServiceGrpcClient.php
index 349afc1..ed7675a 100644
--- a/src/V3/AlertPolicyServiceGrpcClient.php
+++ b/src/V3/AlertPolicyServiceGrpcClient.php
@@ -2,7 +2,7 @@
 // GENERATED CODE -- DO NOT EDIT!
 
 // Original file comments:
-// Copyright 2018 Google LLC.
+// Copyright 2018 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-//
 namespace Google\Cloud\Monitoring\V3;
 
 /**
diff --git a/src/V3/Gapic/NotificationChannelServiceGapicClient.php b/src/V3/Gapic/NotificationChannelServiceGapicClient.php
index 5e5881f..0aa419f 100644
--- a/src/V3/Gapic/NotificationChannelServiceGapicClient.php
+++ b/src/V3/Gapic/NotificationChannelServiceGapicClient.php
@@ -611,7 +611,7 @@ public function getNotificationChannel($name, array $optionalArgs = [])
 
     /**
      * Creates a new notification channel, representing a single notification
-     * endpoint such as an email address, SMS number, or PagerDuty service.
+     * endpoint such as an email address, SMS number, or pagerduty service.
      *
      * Sample code:
      * ```
diff --git a/src/V3/GroupServiceGrpcClient.php b/src/V3/GroupServiceGrpcClient.php
index fad9cea..fd4712e 100644
--- a/src/V3/GroupServiceGrpcClient.php
+++ b/src/V3/GroupServiceGrpcClient.php
@@ -2,7 +2,7 @@
 // GENERATED CODE -- DO NOT EDIT!
 
 // Original file comments:
-// Copyright 2018 Google LLC.
+// Copyright 2018 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-//
 namespace Google\Cloud\Monitoring\V3;
 
 /**
diff --git a/src/V3/InternalChecker.php b/src/V3/InternalChecker.php
index 29e76c8..50d2c72 100644
--- a/src/V3/InternalChecker.php
+++ b/src/V3/InternalChecker.php
@@ -9,51 +9,44 @@
 use Google\Protobuf\Internal\GPBUtil;
 
 /**
- * An internal checker allows uptime checks to run on private/internal GCP
- * resources.
+ * Nimbus InternalCheckers.
  *
  * Generated from protobuf message <code>google.monitoring.v3.InternalChecker</code>
  */
 class InternalChecker extends \Google\Protobuf\Internal\Message
 {
     /**
-     * A unique resource name for this InternalChecker. The format is:
-     *   `projects/[PROJECT_ID]/internalCheckers/[INTERNAL_CHECKER_ID]`.
-     * PROJECT_ID is the stackdriver workspace project for the
-     * uptime check config associated with the internal checker.
+     * The GCP project ID. Not necessarily the same as the project_id for the
+     * config.
      *
-     * Generated from protobuf field <code>string name = 1;</code>
+     * Generated from protobuf field <code>string project_id = 1;</code>
      */
-    private $name = '';
+    private $project_id = '';
     /**
-     * The checker's human-readable name. The display name
-     * should be unique within a Stackdriver Workspace in order to make it easier
-     * to identify; however, uniqueness is not enforced.
+     * The internal network to perform this uptime check on.
      *
-     * Generated from protobuf field <code>string display_name = 2;</code>
-     */
-    private $display_name = '';
-    /**
-     * The [GCP VPC network](https://cloud.google.com/vpc/docs/vpc) where the
-     * internal resource lives (ex: "default").
-     *
-     * Generated from protobuf field <code>string network = 3;</code>
+     * Generated from protobuf field <code>string network = 2;</code>
      */
     private $network = '';
     /**
      * The GCP zone the uptime check should egress from. Only respected for
      * internal uptime checks, where internal_network is specified.
      *
-     * Generated from protobuf field <code>string gcp_zone = 4;</code>
+     * Generated from protobuf field <code>string gcp_zone = 3;</code>
      */
     private $gcp_zone = '';
     /**
-     * The GCP project_id where the internal checker lives. Not necessary
-     * the same as the workspace project.
+     * The checker ID.
      *
-     * Generated from protobuf field <code>string peer_project_id = 6;</code>
+     * Generated from protobuf field <code>string checker_id = 4;</code>
      */
-    private $peer_project_id = '';
+    private $checker_id = '';
+    /**
+     * The checker's human-readable name.
+     *
+     * Generated from protobuf field <code>string display_name = 5;</code>
+     */
+    private $display_name = '';
 
     /**
      * Constructor.
@@ -61,24 +54,18 @@ class InternalChecker extends \Google\Protobuf\Internal\Message
      * @param array $data {
      *     Optional. Data for populating the Message object.
      *
-     *     @type string $name
-     *           A unique resource name for this InternalChecker. The format is:
-     *             `projects/[PROJECT_ID]/internalCheckers/[INTERNAL_CHECKER_ID]`.
-     *           PROJECT_ID is the stackdriver workspace project for the
-     *           uptime check config associated with the internal checker.
-     *     @type string $display_name
-     *           The checker's human-readable name. The display name
-     *           should be unique within a Stackdriver Workspace in order to make it easier
-     *           to identify; however, uniqueness is not enforced.
+     *     @type string $project_id
+     *           The GCP project ID. Not necessarily the same as the project_id for the
+     *           config.
      *     @type string $network
-     *           The [GCP VPC network](https://cloud.google.com/vpc/docs/vpc) where the
-     *           internal resource lives (ex: "default").
+     *           The internal network to perform this uptime check on.
      *     @type string $gcp_zone
      *           The GCP zone the uptime check should egress from. Only respected for
      *           internal uptime checks, where internal_network is specified.
-     *     @type string $peer_project_id
-     *           The GCP project_id where the internal checker lives. Not necessary
-     *           the same as the workspace project.
+     *     @type string $checker_id
+     *           The checker ID.
+     *     @type string $display_name
+     *           The checker's human-readable name.
      * }
      */
     public function __construct($data = NULL) {
@@ -87,147 +74,135 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * A unique resource name for this InternalChecker. The format is:
-     *   `projects/[PROJECT_ID]/internalCheckers/[INTERNAL_CHECKER_ID]`.
-     * PROJECT_ID is the stackdriver workspace project for the
-     * uptime check config associated with the internal checker.
+     * The GCP project ID. Not necessarily the same as the project_id for the
+     * config.
      *
-     * Generated from protobuf field <code>string name = 1;</code>
+     * Generated from protobuf field <code>string project_id = 1;</code>
      * @return string
      */
-    public function getName()
+    public function getProjectId()
     {
-        return $this->name;
+        return $this->project_id;
     }
 
     /**
-     * A unique resource name for this InternalChecker. The format is:
-     *   `projects/[PROJECT_ID]/internalCheckers/[INTERNAL_CHECKER_ID]`.
-     * PROJECT_ID is the stackdriver workspace project for the
-     * uptime check config associated with the internal checker.
+     * The GCP project ID. Not necessarily the same as the project_id for the
+     * config.
      *
-     * Generated from protobuf field <code>string name = 1;</code>
+     * Generated from protobuf field <code>string project_id = 1;</code>
      * @param string $var
      * @return $this
      */
-    public function setName($var)
+    public function setProjectId($var)
     {
         GPBUtil::checkString($var, True);
-        $this->name = $var;
+        $this->project_id = $var;
 
         return $this;
     }
 
     /**
-     * The checker's human-readable name. The display name
-     * should be unique within a Stackdriver Workspace in order to make it easier
-     * to identify; however, uniqueness is not enforced.
+     * The internal network to perform this uptime check on.
      *
-     * Generated from protobuf field <code>string display_name = 2;</code>
+     * Generated from protobuf field <code>string network = 2;</code>
      * @return string
      */
-    public function getDisplayName()
+    public function getNetwork()
     {
-        return $this->display_name;
+        return $this->network;
     }
 
     /**
-     * The checker's human-readable name. The display name
-     * should be unique within a Stackdriver Workspace in order to make it easier
-     * to identify; however, uniqueness is not enforced.
+     * The internal network to perform this uptime check on.
      *
-     * Generated from protobuf field <code>string display_name = 2;</code>
+     * Generated from protobuf field <code>string network = 2;</code>
      * @param string $var
      * @return $this
      */
-    public function setDisplayName($var)
+    public function setNetwork($var)
     {
         GPBUtil::checkString($var, True);
-        $this->display_name = $var;
+        $this->network = $var;
 
         return $this;
     }
 
     /**
-     * The [GCP VPC network](https://cloud.google.com/vpc/docs/vpc) where the
-     * internal resource lives (ex: "default").
+     * The GCP zone the uptime check should egress from. Only respected for
+     * internal uptime checks, where internal_network is specified.
      *
-     * Generated from protobuf field <code>string network = 3;</code>
+     * Generated from protobuf field <code>string gcp_zone = 3;</code>
      * @return string
      */
-    public function getNetwork()
+    public function getGcpZone()
     {
-        return $this->network;
+        return $this->gcp_zone;
     }
 
     /**
-     * The [GCP VPC network](https://cloud.google.com/vpc/docs/vpc) where the
-     * internal resource lives (ex: "default").
+     * The GCP zone the uptime check should egress from. Only respected for
+     * internal uptime checks, where internal_network is specified.
      *
-     * Generated from protobuf field <code>string network = 3;</code>
+     * Generated from protobuf field <code>string gcp_zone = 3;</code>
      * @param string $var
      * @return $this
      */
-    public function setNetwork($var)
+    public function setGcpZone($var)
     {
         GPBUtil::checkString($var, True);
-        $this->network = $var;
+        $this->gcp_zone = $var;
 
         return $this;
     }
 
     /**
-     * The GCP zone the uptime check should egress from. Only respected for
-     * internal uptime checks, where internal_network is specified.
+     * The checker ID.
      *
-     * Generated from protobuf field <code>string gcp_zone = 4;</code>
+     * Generated from protobuf field <code>string checker_id = 4;</code>
      * @return string
      */
-    public function getGcpZone()
+    public function getCheckerId()
     {
-        return $this->gcp_zone;
+        return $this->checker_id;
     }
 
     /**
-     * The GCP zone the uptime check should egress from. Only respected for
-     * internal uptime checks, where internal_network is specified.
+     * The checker ID.
      *
-     * Generated from protobuf field <code>string gcp_zone = 4;</code>
+     * Generated from protobuf field <code>string checker_id = 4;</code>
      * @param string $var
      * @return $this
      */
-    public function setGcpZone($var)
+    public function setCheckerId($var)
     {
         GPBUtil::checkString($var, True);
-        $this->gcp_zone = $var;
+        $this->checker_id = $var;
 
         return $this;
     }
 
     /**
-     * The GCP project_id where the internal checker lives. Not necessary
-     * the same as the workspace project.
+     * The checker's human-readable name.
      *
-     * Generated from protobuf field <code>string peer_project_id = 6;</code>
+     * Generated from protobuf field <code>string display_name = 5;</code>
      * @return string
      */
-    public function getPeerProjectId()
+    public function getDisplayName()
     {
-        return $this->peer_project_id;
+        return $this->display_name;
     }
 
     /**
-     * The GCP project_id where the internal checker lives. Not necessary
-     * the same as the workspace project.
+     * The checker's human-readable name.
      *
-     * Generated from protobuf field <code>string peer_project_id = 6;</code>
+     * Generated from protobuf field <code>string display_name = 5;</code>
      * @param string $var
      * @return $this
      */
-    public function setPeerProjectId($var)
+    public function setDisplayName($var)
     {
         GPBUtil::checkString($var, True);
-        $this->peer_project_id = $var;
+        $this->display_name = $var;
 
         return $this;
     }
diff --git a/src/V3/MetricServiceGrpcClient.php b/src/V3/MetricServiceGrpcClient.php
index c2c2531..1fdfef5 100644
--- a/src/V3/MetricServiceGrpcClient.php
+++ b/src/V3/MetricServiceGrpcClient.php
@@ -2,7 +2,7 @@
 // GENERATED CODE -- DO NOT EDIT!
 
 // Original file comments:
-// Copyright 2018 Google LLC.
+// Copyright 2018 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-//
 namespace Google\Cloud\Monitoring\V3;
 
 /**
diff --git a/src/V3/NotificationChannelServiceGrpcClient.php b/src/V3/NotificationChannelServiceGrpcClient.php
index 6ec26d4..06284ab 100644
--- a/src/V3/NotificationChannelServiceGrpcClient.php
+++ b/src/V3/NotificationChannelServiceGrpcClient.php
@@ -2,7 +2,7 @@
 // GENERATED CODE -- DO NOT EDIT!
 
 // Original file comments:
-// Copyright 2018 Google LLC.
+// Copyright 2018 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-//
 namespace Google\Cloud\Monitoring\V3;
 
 /**
@@ -98,7 +97,7 @@ public function GetNotificationChannel(\Google\Cloud\Monitoring\V3\GetNotificati
 
     /**
      * Creates a new notification channel, representing a single notification
-     * endpoint such as an email address, SMS number, or PagerDuty service.
+     * endpoint such as an email address, SMS number, or pagerduty service.
      * @param \Google\Cloud\Monitoring\V3\CreateNotificationChannelRequest $argument input argument
      * @param array $metadata metadata
      * @param array $options call options
diff --git a/src/V3/ServiceTier.php b/src/V3/ServiceTier.php
index 456819f..93a10cb 100644
--- a/src/V3/ServiceTier.php
+++ b/src/V3/ServiceTier.php
@@ -5,8 +5,8 @@
 namespace Google\Cloud\Monitoring\V3;
 
 /**
- * The tier of service for a Workspace. Please see the
- * [service tiers documentation](https://cloud.google.com/monitoring/workspaces/tiers)
+ * The tier of service for a Stackdriver account. Please see the
+ * [service tiers documentation](https://cloud.google.com/monitoring/accounts/tiers)
  * for more details.
  *
  * Protobuf type <code>google.monitoring.v3.ServiceTier</code>
@@ -24,7 +24,7 @@ class ServiceTier
      * The Stackdriver Basic tier, a free tier of service that provides basic
      * features, a moderate allotment of logs, and access to built-in metrics.
      * A number of features are not available in this tier. For more details,
-     * see [the service tiers documentation](https://cloud.google.com/monitoring/workspaces/tiers).
+     * see [the service tiers documentation](https://cloud.google.com/monitoring/accounts/tiers).
      *
      * Generated from protobuf enum <code>SERVICE_TIER_BASIC = 1;</code>
      */
@@ -33,7 +33,7 @@ class ServiceTier
      * The Stackdriver Premium tier, a higher, more expensive tier of service
      * that provides access to all Stackdriver features, lets you use Stackdriver
      * with AWS accounts, and has a larger allotments for logs and metrics. For
-     * more details, see [the service tiers documentation](https://cloud.google.com/monitoring/workspaces/tiers).
+     * more details, see [the service tiers documentation](https://cloud.google.com/monitoring/accounts/tiers).
      *
      * Generated from protobuf enum <code>SERVICE_TIER_PREMIUM = 2;</code>
      */
diff --git a/src/V3/UptimeCheckConfig.php b/src/V3/UptimeCheckConfig.php
index 63e9ee8..20b47dc 100644
--- a/src/V3/UptimeCheckConfig.php
+++ b/src/V3/UptimeCheckConfig.php
@@ -28,7 +28,7 @@ class UptimeCheckConfig extends \Google\Protobuf\Internal\Message
     private $name = '';
     /**
      * A human-friendly name for the uptime check configuration. The display name
-     * should be unique within a Stackdriver Workspace in order to make it easier
+     * should be unique within a Stackdriver Account in order to make it easier
      * to identify; however, uniqueness is not enforced. Required.
      *
      * Generated from protobuf field <code>string display_name = 2;</code>
@@ -62,7 +62,6 @@ class UptimeCheckConfig extends \Google\Protobuf\Internal\Message
     private $content_matchers;
     /**
      * The list of regions from which the check will be run.
-     * Some regions contain one location, and others contain more than one.
      * If this field is specified, enough regions to include a minimum of
      * 3 locations must be provided, or an error message is returned.
      * Not specifying this field will result in uptime checks running from all
@@ -72,17 +71,14 @@ class UptimeCheckConfig extends \Google\Protobuf\Internal\Message
      */
     private $selected_regions;
     /**
-     * If this is true, then checks are made only from the 'internal_checkers'.
-     * If it is false, then checks are made only from the 'selected_regions'.
-     * It is an error to provide 'selected_regions' when is_internal is true,
-     * or to provide 'internal_checkers' when is_internal is false.
+     * Denotes whether this is a check that egresses from InternalCheckers.
      *
      * Generated from protobuf field <code>bool is_internal = 15;</code>
      */
     private $is_internal = false;
     /**
      * The internal checkers that this check will egress from. If `is_internal` is
-     * true and this list is empty, the check will egress from all the
+     * true and this list is empty, the check will egress from all
      * InternalCheckers configured for the project that owns this CheckConfig.
      *
      * Generated from protobuf field <code>repeated .google.monitoring.v3.InternalChecker internal_checkers = 14;</code>
@@ -105,7 +101,7 @@ class UptimeCheckConfig extends \Google\Protobuf\Internal\Message
      *           response.
      *     @type string $display_name
      *           A human-friendly name for the uptime check configuration. The display name
-     *           should be unique within a Stackdriver Workspace in order to make it easier
+     *           should be unique within a Stackdriver Account in order to make it easier
      *           to identify; however, uniqueness is not enforced. Required.
      *     @type \Google\Api\MonitoredResource $monitored_resource
      *           The [monitored
@@ -139,19 +135,15 @@ class UptimeCheckConfig extends \Google\Protobuf\Internal\Message
      *           specified if a content match is required.
      *     @type int[]|\Google\Protobuf\Internal\RepeatedField $selected_regions
      *           The list of regions from which the check will be run.
-     *           Some regions contain one location, and others contain more than one.
      *           If this field is specified, enough regions to include a minimum of
      *           3 locations must be provided, or an error message is returned.
      *           Not specifying this field will result in uptime checks running from all
      *           regions.
      *     @type bool $is_internal
-     *           If this is true, then checks are made only from the 'internal_checkers'.
-     *           If it is false, then checks are made only from the 'selected_regions'.
-     *           It is an error to provide 'selected_regions' when is_internal is true,
-     *           or to provide 'internal_checkers' when is_internal is false.
+     *           Denotes whether this is a check that egresses from InternalCheckers.
      *     @type \Google\Cloud\Monitoring\V3\InternalChecker[]|\Google\Protobuf\Internal\RepeatedField $internal_checkers
      *           The internal checkers that this check will egress from. If `is_internal` is
-     *           true and this list is empty, the check will egress from all the
+     *           true and this list is empty, the check will egress from all
      *           InternalCheckers configured for the project that owns this CheckConfig.
      * }
      */
@@ -196,7 +188,7 @@ public function setName($var)
 
     /**
      * A human-friendly name for the uptime check configuration. The display name
-     * should be unique within a Stackdriver Workspace in order to make it easier
+     * should be unique within a Stackdriver Account in order to make it easier
      * to identify; however, uniqueness is not enforced. Required.
      *
      * Generated from protobuf field <code>string display_name = 2;</code>
@@ -209,7 +201,7 @@ public function getDisplayName()
 
     /**
      * A human-friendly name for the uptime check configuration. The display name
-     * should be unique within a Stackdriver Workspace in order to make it easier
+     * should be unique within a Stackdriver Account in order to make it easier
      * to identify; however, uniqueness is not enforced. Required.
      *
      * Generated from protobuf field <code>string display_name = 2;</code>
@@ -440,7 +432,6 @@ public function setContentMatchers($var)
 
     /**
      * The list of regions from which the check will be run.
-     * Some regions contain one location, and others contain more than one.
      * If this field is specified, enough regions to include a minimum of
      * 3 locations must be provided, or an error message is returned.
      * Not specifying this field will result in uptime checks running from all
@@ -456,7 +447,6 @@ public function getSelectedRegions()
 
     /**
      * The list of regions from which the check will be run.
-     * Some regions contain one location, and others contain more than one.
      * If this field is specified, enough regions to include a minimum of
      * 3 locations must be provided, or an error message is returned.
      * Not specifying this field will result in uptime checks running from all
@@ -475,10 +465,7 @@ public function setSelectedRegions($var)
     }
 
     /**
-     * If this is true, then checks are made only from the 'internal_checkers'.
-     * If it is false, then checks are made only from the 'selected_regions'.
-     * It is an error to provide 'selected_regions' when is_internal is true,
-     * or to provide 'internal_checkers' when is_internal is false.
+     * Denotes whether this is a check that egresses from InternalCheckers.
      *
      * Generated from protobuf field <code>bool is_internal = 15;</code>
      * @return bool
@@ -489,10 +476,7 @@ public function getIsInternal()
     }
 
     /**
-     * If this is true, then checks are made only from the 'internal_checkers'.
-     * If it is false, then checks are made only from the 'selected_regions'.
-     * It is an error to provide 'selected_regions' when is_internal is true,
-     * or to provide 'internal_checkers' when is_internal is false.
+     * Denotes whether this is a check that egresses from InternalCheckers.
      *
      * Generated from protobuf field <code>bool is_internal = 15;</code>
      * @param bool $var
@@ -508,7 +492,7 @@ public function setIsInternal($var)
 
     /**
      * The internal checkers that this check will egress from. If `is_internal` is
-     * true and this list is empty, the check will egress from all the
+     * true and this list is empty, the check will egress from all
      * InternalCheckers configured for the project that owns this CheckConfig.
      *
      * Generated from protobuf field <code>repeated .google.monitoring.v3.InternalChecker internal_checkers = 14;</code>
@@ -521,7 +505,7 @@ public function getInternalCheckers()
 
     /**
      * The internal checkers that this check will egress from. If `is_internal` is
-     * true and this list is empty, the check will egress from all the
+     * true and this list is empty, the check will egress from all
      * InternalCheckers configured for the project that owns this CheckConfig.
      *
      * Generated from protobuf field <code>repeated .google.monitoring.v3.InternalChecker internal_checkers = 14;</code>
diff --git a/src/V3/UptimeCheckConfig/ContentMatcher.php b/src/V3/UptimeCheckConfig/ContentMatcher.php
index 74d91a8..397067e 100644
--- a/src/V3/UptimeCheckConfig/ContentMatcher.php
+++ b/src/V3/UptimeCheckConfig/ContentMatcher.php
@@ -9,15 +9,16 @@
 use Google\Protobuf\Internal\GPBUtil;
 
 /**
- * Used to perform string matching. It allows substring and regular
- * expressions, together with their negations.
+ * Used to perform string matching. Currently, this matches on the exact
+ * content. In the future, it can be expanded to allow for regular expressions
+ * and more complex matching.
  *
  * Generated from protobuf message <code>google.monitoring.v3.UptimeCheckConfig.ContentMatcher</code>
  */
 class ContentMatcher extends \Google\Protobuf\Internal\Message
 {
     /**
-     * String or regex content to match (max 1024 bytes)
+     * String content to match (max 1024 bytes)
      *
      * Generated from protobuf field <code>string content = 1;</code>
      */
@@ -30,7 +31,7 @@ class ContentMatcher extends \Google\Protobuf\Internal\Message
      *     Optional. Data for populating the Message object.
      *
      *     @type string $content
-     *           String or regex content to match (max 1024 bytes)
+     *           String content to match (max 1024 bytes)
      * }
      */
     public function __construct($data = NULL) {
@@ -39,7 +40,7 @@ public function __construct($data = NULL) {
     }
 
     /**
-     * String or regex content to match (max 1024 bytes)
+     * String content to match (max 1024 bytes)
      *
      * Generated from protobuf field <code>string content = 1;</code>
      * @return string
@@ -50,7 +51,7 @@ public function getContent()
     }
 
     /**
-     * String or regex content to match (max 1024 bytes)
+     * String content to match (max 1024 bytes)
      *
      * Generated from protobuf field <code>string content = 1;</code>
      * @param string $var
diff --git a/src/V3/UptimeCheckServiceGrpcClient.php b/src/V3/UptimeCheckServiceGrpcClient.php
index 97b7ee5..e5de553 100644
--- a/src/V3/UptimeCheckServiceGrpcClient.php
+++ b/src/V3/UptimeCheckServiceGrpcClient.php
@@ -2,7 +2,7 @@
 // GENERATED CODE -- DO NOT EDIT!
 
 // Original file comments:
-// Copyright 2018 Google LLC.
+// Copyright 2018 Google LLC
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -16,7 +16,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 //
-//
 namespace Google\Cloud\Monitoring\V3;
 
 /**