public int getConversationCount(HttpUrl url) {
public int getConversationCount() {
        public int getConversationCount(HttpUrl url) {            try {                _rwl.readLock().acquire();                return _compared.size();            } catch (InterruptedException ie) {                _logger.warning("Interrupted! " + ie);                return -1;            } finally {                _rwl.readLock().release();            }        }