public int getIndexOfConversation(HttpUrl url, ConversationID id) {
public int getIndexOfConversation(ConversationID id) {
        public int getIndexOfConversation(HttpUrl url, ConversationID id) {            try {                readLock().acquire();                try {                    return _store.getIndexOfConversation(url, id);                } finally {                    readLock().release();                }            } catch (InterruptedException ie) {                _logger.severe("Interrupted! " + ie);                return 0;            }        }