@io.grpc.stub.annotations.RpcMethod(
      fullMethodName = SERVICE_NAME + '/' + "ListBlueprintRevisions",
      requestType = com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsRequest.class,
      responseType = com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsResponse.class,
      methodType = io.grpc.MethodDescriptor.MethodType.UNARY)
  public static io.grpc.MethodDescriptor<
          com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsRequest,
          com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsResponse>
      getListBlueprintRevisionsMethod() {
    io.grpc.MethodDescriptor<
            com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsRequest,
            com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsResponse>
        getListBlueprintRevisionsMethod;
    if ((getListBlueprintRevisionsMethod = TelcoAutomationGrpc.getListBlueprintRevisionsMethod)
        == null) {
      synchronized (TelcoAutomationGrpc.class) {
        if ((getListBlueprintRevisionsMethod = TelcoAutomationGrpc.getListBlueprintRevisionsMethod)
            == null) {
          TelcoAutomationGrpc.getListBlueprintRevisionsMethod =
              getListBlueprintRevisionsMethod =
                  io.grpc.MethodDescriptor
                      .<com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsRequest,
                          com.google.cloud.telcoautomation.v1alpha1.ListBlueprintRevisionsResponse>
                          newBuilder()
                      .setType(io.grpc.MethodDescriptor.MethodType.UNARY)
                      .setFullMethodName(
                          generateFullMethodName(SERVICE_NAME, "ListBlueprintRevisions"))
                      .setSampledToLocalTracing(true)
                      .setRequestMarshaller(
                          io.grpc.protobuf.ProtoUtils.marshaller(
                              com.google.cloud.telcoautomation.v1alpha1
                                  .ListBlueprintRevisionsRequest.getDefaultInstance()))
                      .setResponseMarshaller(
                          io.grpc.protobuf.ProtoUtils.marshaller(
                              com.google.cloud.telcoautomation.v1alpha1
                                  .ListBlueprintRevisionsResponse.getDefaultInstance()))
                      .setSchemaDescriptor(
                          new TelcoAutomationMethodDescriptorSupplier("ListBlueprintRevisions"))
                      .build();
        }
      }
    }
    return getListBlueprintRevisionsMethod;
  }
<pre>
TelcoAutomation Service manages the control plane cluster a.k.a.
Orchestration Cluster (GKE cluster with config controller) of TNA. It also
exposes blueprint APIs which manages the lifecycle of blueprints that control
the infrastructure setup (e.g GDCE clusters) and deployment of network
functions.
</pre>
java-telcoautomation/grpc-google-cloud-telcoautomation-v1alpha1/src/main/java/com/google/cloud/telcoautomation/v1alpha1/TelcoAutomationGrpc.java