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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def new_method_return(self) :
        "creates a new DBUS.MESSAGE_TYPE_METHOD_RETURN that is a reply to this Message."
        result = dbus.dbus_message_new_method_return(self._dbobj)
        if result == None :
            raise CallFailed("dbus_message_new_method_return")
        #end if
        return \
            type(self)(result)