class_docstr: Test Metadata operations using a SQLite-backed store.
code: def metadata(self):
      connection_config = metadata_store_pb2.ConnectionConfig()
      connection_config.sqlite.SetInParent()
      return metadata.Metadata(connection_config=connection_config)
  
imports: import tensorflow
  from tfx.orchestration import metadata
  from tfx.orchestration import metadata_test_utils
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 1 for calling the SqliteMetadataTest obj's underlying member method code with example usage: obj.metadata() and returns: metadata