class_docstr: Abstract base class for protocol messages.
  
  Protocol message classes are almost always generated by the protocol
  compiler.  These generated types subclass Message and implement the methods
  shown below.
docstr: Support the pickle protocol.
docstr_tok: ["Support","the","pickle","protocol","."]
code: def __setstate__(self, state):
      """Support the pickle protocol."""
      self.__init__()
      serialized = state["serialized"]
      # On Python 3, using encoding='latin1' is required for unpickling
      # protos pickled by Python 2.
      if not isinstance(serialized, bytes):
          serialized = serialized.encode("latin1")
      self.ParseFromString(serialized)
  
label_desc: Use image node_id 27 for calling the Message obj's underlying member method code with example usage: obj.__setstate__(state) without return types