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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 _drop_membership_multicast_socket(self):
 """ Drop membership to multicast :rtype: None """

        # Leave group
        self._multicast_socket.setsockopt(
            socket.IPPROTO_IP,
            socket.IP_DROP_MEMBERSHIP,
            self._membership_request
        )
        self._membership_request = None