chore(deps): upgrade gapic-generator-java to 2.8.0 and update gax-jav…

…a to 2.18.1 (#873)

* chore(deps): upgrade gapic-generator-java to 2.8.0 and update gax-java to 2.18.1

PiperOrigin-RevId: 450543911

Source-Link: googleapis/googleapis@5528344

Source-Link: https://github.com/googleapis/googleapis-gen/commit/9f6775cab1958982b88967a43e5e806af0f135db
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOWY2Nzc1Y2FiMTk1ODk4MmI4ODk2N2E0M2U1ZTgwNmFmMGYxMzVkYiJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorGroupServiceClient.java

@@ -118,7 +118,6 @@ public static final ErrorGroupServiceClient create(ErrorGroupServiceSettings set
    * Constructs an instance of ErrorGroupServiceClient, using the given stub for making calls. This
    * is for advanced usage - prefer using create(ErrorGroupServiceSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final ErrorGroupServiceClient create(ErrorGroupServiceStub stub) {
     return new ErrorGroupServiceClient(stub);
   }
@@ -133,7 +132,6 @@ protected ErrorGroupServiceClient(ErrorGroupServiceSettings settings) throws IOE
     this.stub = ((ErrorGroupServiceStubSettings) settings.getStubSettings()).createStub();
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected ErrorGroupServiceClient(ErrorGroupServiceStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -143,7 +141,6 @@ public final ErrorGroupServiceSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ErrorGroupServiceStub getStub() {
     return stub;
   }

java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ErrorStatsServiceClient.java

@@ -127,7 +127,6 @@ public static final ErrorStatsServiceClient create(ErrorStatsServiceSettings set
    * Constructs an instance of ErrorStatsServiceClient, using the given stub for making calls. This
    * is for advanced usage - prefer using create(ErrorStatsServiceSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final ErrorStatsServiceClient create(ErrorStatsServiceStub stub) {
     return new ErrorStatsServiceClient(stub);
   }
@@ -142,7 +141,6 @@ protected ErrorStatsServiceClient(ErrorStatsServiceSettings settings) throws IOE
     this.stub = ((ErrorStatsServiceStubSettings) settings.getStubSettings()).createStub();
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected ErrorStatsServiceClient(ErrorStatsServiceStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -152,7 +150,6 @@ public final ErrorStatsServiceSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ErrorStatsServiceStub getStub() {
     return stub;
   }

java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/ReportErrorsServiceClient.java

@@ -120,7 +120,6 @@ public static final ReportErrorsServiceClient create(ReportErrorsServiceSettings
    * Constructs an instance of ReportErrorsServiceClient, using the given stub for making calls.
    * This is for advanced usage - prefer using create(ReportErrorsServiceSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final ReportErrorsServiceClient create(ReportErrorsServiceStub stub) {
     return new ReportErrorsServiceClient(stub);
   }
@@ -135,7 +134,6 @@ protected ReportErrorsServiceClient(ReportErrorsServiceSettings settings) throws
     this.stub = ((ReportErrorsServiceStubSettings) settings.getStubSettings()).createStub();
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected ReportErrorsServiceClient(ReportErrorsServiceStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -145,7 +143,6 @@ public final ReportErrorsServiceSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ReportErrorsServiceStub getStub() {
     return stub;
   }

java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorGroupServiceStubSettings.java

@@ -99,7 +99,6 @@ public UnaryCallSettings<UpdateGroupRequest, ErrorGroup> updateGroupSettings() {
     return updateGroupSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ErrorGroupServiceStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()

java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ErrorStatsServiceStubSettings.java

@@ -237,7 +237,6 @@ public UnaryCallSettings<DeleteEventsRequest, DeleteEventsResponse> deleteEvents
     return deleteEventsSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ErrorStatsServiceStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()

java-errorreporting/google-cloud-errorreporting/src/main/java/com/google/devtools/clouderrorreporting/v1beta1/stub/ReportErrorsServiceStubSettings.java

@@ -94,7 +94,6 @@ public class ReportErrorsServiceStubSettings extends StubSettings<ReportErrorsSe
     return reportErrorEventSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public ReportErrorsServiceStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()