protected synchronized boolean doDisconnect ( boolean hard, boolean inUse ) throws IOException {
        ListIterator<SmbSessionImpl> iter = this.sessions.listIterator();
        boolean wasInUse = false;
        long l = getUsageCount();
        if ( ( inUse && l != 1 ) || ( !inUse && l > 0 ) ) {
            log.warn("Disconnecting transport while still in use " + this + ": " + this.sessions);
            wasInUse = true;
        }