public static io.grpc.ServiceDescriptor getServiceDescriptor() {
    io.grpc.ServiceDescriptor result = serviceDescriptor;
    if (result == null) {
      synchronized (WorkflowsGrpc.class) {
        result = serviceDescriptor;
        if (result == null) {
          serviceDescriptor =
              result =
                  io.grpc.ServiceDescriptor.newBuilder(SERVICE_NAME)
                      .setSchemaDescriptor(new WorkflowsFileDescriptorSupplier())
                      .addMethod(getListWorkflowsMethod())
                      .addMethod(getGetWorkflowMethod())
                      .addMethod(getCreateWorkflowMethod())
                      .addMethod(getDeleteWorkflowMethod())
                      .addMethod(getUpdateWorkflowMethod())
                      .addMethod(getListWorkflowRevisionsMethod())
                      .build();
        }
      }
    }
    return result;
  }
<pre>
Lists revisions for a given workflow.
</pre>
java-workflows/grpc-google-cloud-workflows-v1/src/main/java/com/google/cloud/workflows/v1/WorkflowsGrpc.java