@Override
  public UnaryCallable<CreateGroupRequest, Operation> createGroupCallable() {
    return createGroupCallable;
  }
Constructs an instance of HttpJsonVmMigrationStub, using the given settings. This is protected
so that it is easy to make a subclass, but otherwise, the static factory methods should be
preferred.
java-vmmigration/google-cloud-vmmigration/src/main/java/com/google/cloud/vmmigration/v1/stub/HttpJsonVmMigrationStub.java