       map :params, :string, :string, 0       oneof :source do         optional :gcs_source, :message, 0, "google.cloud.automl.v0beta0.GcsSource"         optional :bigquery_source, :message, 0, "google.cloud.automl.v0beta0.BigQuerySource"       end     end     add_message "google.cloud.automl.v0beta0.BatchPredictInputConfig"