index_path_name = index_path_name.decode('utf-8').split(':')[0]
          try:
            # Only use the index_path name if it points to a Retval node.
            index_path_node = graph.get_operation_by_name(index_path_name)
            if index_path_node.type == '_Retval':
              expected_node_name = index_path_name
          except KeyError:
            pass