parameters: (self, method_descriptor)
docstring: Returns the class of the request message for the specified method.
  
      CallMethod() requires that the request is of a particular subclass of
      Message. GetRequestClass() gets the default instance of this required
      type.
  
      Example:
        method = service.GetDescriptor().FindMethodByName("Foo")
        request = stub.GetRequestClass(method)()
        request.ParseFromString(input)
        service.CallMethod(method, request, callback)
docstring_summary: Returns the class of the request message for the specified method.
docstring_tokens: Returns the class of the request message for the specified method .
function: def GetRequestClass(self, method_descriptor):
      """Returns the class of the request message for the specified method.
  
      CallMethod() requires that the request is of a particular subclass of
      Message. GetRequestClass() gets the default instance of this required
      type.
  
      Example:
        method = service.GetDescriptor().FindMethodByName("Foo")
        request = stub.GetRequestClass(method)()
        request.ParseFromString(input)
        service.CallMethod(method, request, callback)
      """
      raise NotImplementedError
function_tokens: def GetRequestClass ( self , method_descriptor ) : raise NotImplementedError