class_docstr: Abstract base interface for protocol-buffer-based RPC services.
  
  Services themselves are abstract classes (implemented either by servers or as
  stubs), but they subclass this base interface. The methods of this
  interface can be used to call the methods of the service without knowing
  its exact type at compile time (analogous to the Message interface).
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docstr: Returns the class of the response message for the specified method.
  
  This method isn't really needed, as the RpcChannel's CallMethod constructs
  the response protocol message. It's provided anyway in case it is useful
  for the caller to know the response type in advance.
docstr_tok: ["Returns","the","class","of","the","response","message","for","the","specified","method",".","This","method","is","n't","really","needed",",","as","the","RpcChannel","'s","CallMethod","constructs","the","response","protocol","message",".","It","'s","provided","anyway","in","case","it","is","useful","for","the","caller","to","know","the","response","type","in","advance","."]
code: def GetResponseClass(self, method_descriptor):
      """Returns the class of the response message for the specified method.
  
      This method isn't really needed, as the RpcChannel's CallMethod constructs
      the response protocol message. It's provided anyway in case it is useful
      for the caller to know the response type in advance.
      """
      raise NotImplementedError
  
file_path: turicreate/src/external/coremltools_wrap/coremltools/deps/protobuf/python/google/protobuf/service.py
label_desc: Use image node_id 4 for calling the Service obj's underlying member method code with example usage: obj.GetResponseClass(method_descriptor) without return types