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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 set_group_mask(self, group_mask=ALL_GROUPS):
 """ Set the group mask that the Crazyflie belongs to :param group_mask: mask for which groups this CF belongs to """

        self._send_packet(struct.pack('<BB',
                                      self.COMMAND_SET_GROUP_MASK,
                                      group_mask))