Returns:
      True if and only if the graph def contains a quantized function call.
    """
    return any(map(self._is_quantized_function, graphdef.library.function))

  def _contains_composite_function_call(
      self, graphdef: graph_pb2.GraphDef
  ) -> bool:
    """Determines if the graph def has composite function call.

    Args:
      graphdef: A GraphDef object.

    Returns: