parameters: (self, method_descriptor, rpc_controller,
                   request, done)
docstring: Calls a method of the service specified by method_descriptor.
  
      If "done" is None then the call is blocking and the response
      message will be returned directly.  Otherwise the call is asynchronous
      and "done" will later be called with the response value.
  
      In the blocking case, RpcException will be raised on error.
  
      Preconditions:
  
      * method_descriptor.service == GetDescriptor
      * request is of the exact same classes as returned by
        GetRequestClass(method).
      * After the call has started, the request must not be modified.
      * "rpc_controller" is of the correct type for the RPC implementation being
        used by this Service.  For stubs, the "correct type" depends on the
        RpcChannel which the stub is using.
  
      Postconditions:
  
      * "done" will be called when the method is complete.  This may be
        before CallMethod() returns or it may be at some point in the future.
      * If the RPC failed, the response value passed to "done" will be None.
        Further details about the failure can be found by querying the
        RpcController.
docstring_summary: Calls a method of the service specified by method_descriptor.
docstring_tokens: Calls a method of the service specified by method_descriptor .
function: def CallMethod(self, method_descriptor, rpc_controller,
                   request, done):
      """Calls a method of the service specified by method_descriptor.
  
      If "done" is None then the call is blocking and the response
      message will be returned directly.  Otherwise the call is asynchronous
      and "done" will later be called with the response value.
  
      In the blocking case, RpcException will be raised on error.
  
      Preconditions:
  
      * method_descriptor.service == GetDescriptor
      * request is of the exact same classes as returned by
        GetRequestClass(method).
      * After the call has started, the request must not be modified.
      * "rpc_controller" is of the correct type for the RPC implementation being
        used by this Service.  For stubs, the "correct type" depends on the
        RpcChannel which the stub is using.
  
      Postconditions:
  
      * "done" will be called when the method is complete.  This may be
        before CallMethod() returns or it may be at some point in the future.
      * If the RPC failed, the response value passed to "done" will be None.
        Further details about the failure can be found by querying the
        RpcController.
      """
      raise NotImplementedError
function_tokens: def CallMethod ( self , method_descriptor , rpc_controller , request , done ) : raise NotImplementedError