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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 hold_sync(self):
 """Hold syncing any state until the outermost context manager exits"""

        if self._holding_sync is True:
            yield
        else:
            try:
                self._holding_sync = True
                yield
            finally:
                self._holding_sync = False
                self.send_state(self._states_to_send)
                self._states_to_send.clear()