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

…a to 2.18.1 (#186)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 450543911

Source-Link: googleapis/googleapis@5528344

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

java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/CloudFilestoreManagerClient.java

@@ -18,7 +18,6 @@
 
 import com.google.api.core.ApiFuture;
 import com.google.api.core.ApiFutures;
-import com.google.api.core.BetaApi;
 import com.google.api.gax.core.BackgroundResource;
 import com.google.api.gax.longrunning.OperationFuture;
 import com.google.api.gax.paging.AbstractFixedSizeCollection;
@@ -158,7 +157,6 @@ public static final CloudFilestoreManagerClient create(CloudFilestoreManagerSett
    * Constructs an instance of CloudFilestoreManagerClient, using the given stub for making calls.
    * This is for advanced usage - prefer using create(CloudFilestoreManagerSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final CloudFilestoreManagerClient create(CloudFilestoreManagerStub stub) {
     return new CloudFilestoreManagerClient(stub);
   }
@@ -174,7 +172,6 @@ protected CloudFilestoreManagerClient(CloudFilestoreManagerSettings settings) th
     this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected CloudFilestoreManagerClient(CloudFilestoreManagerStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -185,7 +182,6 @@ public final CloudFilestoreManagerSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public CloudFilestoreManagerStub getStub() {
     return stub;
   }

java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1/stub/CloudFilestoreManagerStubSettings.java

@@ -348,7 +348,6 @@ public UnaryCallSettings<UpdateBackupRequest, Operation> updateBackupSettings()
     return updateBackupOperationSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public CloudFilestoreManagerStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()

java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/CloudFilestoreManagerClient.java

@@ -159,7 +159,6 @@ public static final CloudFilestoreManagerClient create(CloudFilestoreManagerSett
    * Constructs an instance of CloudFilestoreManagerClient, using the given stub for making calls.
    * This is for advanced usage - prefer using create(CloudFilestoreManagerSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final CloudFilestoreManagerClient create(CloudFilestoreManagerStub stub) {
     return new CloudFilestoreManagerClient(stub);
   }
@@ -175,7 +174,6 @@ protected CloudFilestoreManagerClient(CloudFilestoreManagerSettings settings) th
     this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected CloudFilestoreManagerClient(CloudFilestoreManagerStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -186,7 +184,6 @@ public final CloudFilestoreManagerSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public CloudFilestoreManagerStub getStub() {
     return stub;
   }

java-filestore/google-cloud-filestore/src/main/java/com/google/cloud/filestore/v1beta1/stub/CloudFilestoreManagerStubSettings.java

@@ -349,7 +349,6 @@ public UnaryCallSettings<UpdateBackupRequest, Operation> updateBackupSettings()
     return updateBackupOperationSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public CloudFilestoreManagerStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()