Method leaveRoom

src/main/java/Client/Roster.java:1989–1997

(Group group)

    }

    public void leaveRoom(Group group) {
        ConferenceGroup confGroup = (ConferenceGroup) group;
        Contact myself = confGroup.selfContact;
        confGroup.confContact.commonPresence = false; //disable reenter after reconnect
        sendPresence(myself.getJid().toString(), "unavailable", null, true);

        confGroup.inRoom = false;
        roomOffline(group);
    }

    public void roomOffline(final Group group) {
        int j = hContacts.size();