public int getConversationCount(HttpUrl url) {
public int getConversationCount() {
    public int getConversationCount(HttpUrl url) {        try {            _model.readLock().acquire();            return _model.getConversationCount(null) - _filtered.size();        } catch (InterruptedException ie) {            // _logger.warning("Interrupted waiting for the read lock! " + ie.getMessage());            return 0;        } finally {            _model.readLock().release();        }    }