docs: @BetaApi(
        "The surface for long-running operations is not stable yet and may change in the future.")
    public final OperationFuture<Database, CreateDatabaseMetadata> createDatabaseAsync(
        InstanceName parent, String createStatement) {
  
      CreateDatabaseRequest request =
          CreateDatabaseRequest.newBuilder()
              .setParent(parent == null ? null : parent.toString())
              .setCreateStatement(createStatement)
              .build();
      return createDatabaseAsync(request);
    }