code: def table_data_client(self):
          
          if self._table_data_client is None:
              self._table_data_client = _create_gapic_client(bigtable_v2.BigtableClient)(
                  self
              )
          return self._table_data_client
docs: Getter for the gRPC stub used for the Table Admin API.
  
          For example:
  
          .. literalinclude:: snippets.py
              :start-after: [START bigtable_table_data_client]
              :end-before: [END bigtable_table_data_client]
  
          :rtype: :class:`.bigtable_v2.BigtableClient`
          :returns: A BigtableClient object.