context:
      datasourceReferences:
        bigQueryTableReferences:
          bigQueryTableReference:
            - projectId:
              datasetId:
              tableId:

message DatasourceReferences {
  // The datasources to use.
  oneof references {
    // References to BigQuery tables.
    BigQueryTableReferences bq = 1;

    // References to Looker Studio datasources.
    StudioDatasourceReferences studio = 2;

    // References to Looker Explores.
    LookerExploreReferences looker = 3;

    // Reference to an AlloyDB database. Only supported for the `QueryData`
    // method.
    AlloyDbReference alloydb = 8;

    // Reference to a Spanner database. Only supported for the `QueryData`
    // method.
    SpannerReference spanner_reference = 9;

    // Reference to a CloudSql database. Only supported for the `QueryData`
    // method.
    CloudSqlReference cloud_sql_reference = 10;
  }