efl/src/lib/ecore_con/efl_net_socket_unix.eo

class @beta Efl.Net.Socket_Unix extends Efl.Net.Socket_Fd {
    [[A base UNIX socket.

      This is the common class and takes an existing FD, usually
      created by an dialer or server.
    ]]

    implements {
        Efl.Loop_Fd.fd { set; }
    }
}