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) {
        if (type.isAssignableFrom(this.getClass())) {
            return (T) this;
        }