}

    /**
     * @return whether the session is in use
     */
    @Override
    public boolean isInUse() {
        return this.usageCount.get() > 0;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbSession#unwrap(java.lang.Class)
     */
    @SuppressWarnings("unchecked")
    @Override
    public <T extends SmbSession> T unwrap(Class<T> type) {

        String circuitBreakerName = String.format("SMB-%s:%d", address.getHostAddress(), port);
        this.circuitBreaker = new SimpleCircuitBreaker(circuitBreakerName, 3, 2, 30000L);

    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.util.transport.Transport#getResponseTimeout()
     */
    @Override
    protected int getResponseTimeout(final Request req) {
        if (req instanceof CommonServerMessageBlockRequest) {