Returns the multicast groups this server has joined.
The iterator is only valid until a new group is joined or left using Efl.Net.Socket_Udp.multicast_join or Efl.Net.Socket_Udp.multicast_leave.
multicast_groups_get { return: iterator<string>; }
Eina_Iterator *efl_net_socket_udp_multicast_groups_get(Eo *obj);