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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:
 async def handle_action(self, action_type, payload, **kwds):
 """ The default action Handler has no action. """

        # if there is a service attached to the action handler
        if hasattr(self, 'service'):
            # handle roll calls
            await roll_call_handler(self.service, action_type, payload, **kwds)