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

…a to 2.18.1 (#228)

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 450543911

Source-Link: googleapis/googleapis@5528344

Source-Link: googleapis/googleapis-gen@9f6775c
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiOWY2Nzc1Y2FiMTk1ODk4MmI4ODk2N2E0M2U1ZTgwNmFmMGYxMzVkYiJ9

java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/DomainsClient.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;
@@ -129,7 +128,6 @@ public static final DomainsClient create(DomainsSettings settings) throws IOExce
    * Constructs an instance of DomainsClient, using the given stub for making calls. This is for
    * advanced usage - prefer using create(DomainsSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final DomainsClient create(DomainsStub stub) {
     return new DomainsClient(stub);
   }
@@ -144,7 +142,6 @@ protected DomainsClient(DomainsSettings settings) throws IOException {
     this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected DomainsClient(DomainsStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -155,7 +152,6 @@ public final DomainsSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DomainsStub getStub() {
     return stub;
   }

java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1/stub/DomainsStubSettings.java

@@ -354,7 +354,6 @@ public UnaryCallSettings<DeleteRegistrationRequest, Operation> deleteRegistratio
     return resetAuthorizationCodeSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DomainsStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()

java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/DomainsClient.java

@@ -130,7 +130,6 @@ public static final DomainsClient create(DomainsSettings settings) throws IOExce
    * Constructs an instance of DomainsClient, using the given stub for making calls. This is for
    * advanced usage - prefer using create(DomainsSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final DomainsClient create(DomainsStub stub) {
     return new DomainsClient(stub);
   }
@@ -145,7 +144,6 @@ protected DomainsClient(DomainsSettings settings) throws IOException {
     this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected DomainsClient(DomainsStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -156,7 +154,6 @@ public final DomainsSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DomainsStub getStub() {
     return stub;
   }

java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1alpha2/stub/DomainsStubSettings.java

@@ -355,7 +355,6 @@ public UnaryCallSettings<DeleteRegistrationRequest, Operation> deleteRegistratio
     return resetAuthorizationCodeSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DomainsStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()

java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/DomainsClient.java

@@ -130,7 +130,6 @@ public static final DomainsClient create(DomainsSettings settings) throws IOExce
    * Constructs an instance of DomainsClient, using the given stub for making calls. This is for
    * advanced usage - prefer using create(DomainsSettings).
    */
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public static final DomainsClient create(DomainsStub stub) {
     return new DomainsClient(stub);
   }
@@ -145,7 +144,6 @@ protected DomainsClient(DomainsSettings settings) throws IOException {
     this.operationsClient = OperationsClient.create(this.stub.getOperationsStub());
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   protected DomainsClient(DomainsStub stub) {
     this.settings = null;
     this.stub = stub;
@@ -156,7 +154,6 @@ public final DomainsSettings getSettings() {
     return settings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DomainsStub getStub() {
     return stub;
   }

java-domains/google-cloud-domains/src/main/java/com/google/cloud/domains/v1beta1/stub/DomainsStubSettings.java

@@ -355,7 +355,6 @@ public UnaryCallSettings<DeleteRegistrationRequest, Operation> deleteRegistratio
     return resetAuthorizationCodeSettings;
   }
 
-  @BetaApi("A restructuring of stub classes is planned, so this may break in the future")
   public DomainsStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()