Get a group call room

signalingGetRoomByGroupID() takes a group ID, not roomID, even when the call uses a custom roomID.

OpenIMClient.getInstance().signalingManager.signalingGetRoomByGroupID(
    new OnBase<RoomCallingInfo>() {
        @Override
        public void onSuccess(RoomCallingInfo room) {
            // room contains a snapshot of the room, invitation, and current participants.
        }

        @Override
        public void onError(int code, String error) {
            // code and error describe why the query failed.
        }
    },
    groupID
);

The success callback returns a RoomCallingInfo snapshot containing the room ID, original invitation, participants, group ID, token, and connection address.

When a successful result has no valid roomID, no usable room information was returned. The code and error in an error callback only describe the query failure; they do not establish that the group has no active call.