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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 enter_unlinking_mode(self, group):
 """Unlink a device from an All-Link group. Not supported by i1 devices. """

        msg = StandardSend(self._address,
                           COMMAND_ENTER_UNLINKING_MODE_0X0A_NONE,
                           cmd2=group)
        self._send_msg(msg)