return this.preferredCiphers;
    }

    @Override
    public boolean isAES256Enabled() {
        return this.aes256Enabled;
    }

    @Override
    public boolean isUseLease() {
        return this.useLease;
    }

    @Override
    public int getLeaseTimeout() {
        return this.leaseTimeout;
    }

    @Override
    public int getMaxLeases() {
        return this.maxLeases;

     */
    boolean isForceExtendedSecurity();

    /**
     * Property {@code jcifs.smb.client.useLease} (boolean, default true)
     *
     * @return whether to use SMB2/SMB3 leases for caching
     * @since 2.2
     */
    boolean isUseLease();

    /**
     * Property {@code jcifs.smb.client.leaseTimeout} (int, default 30000)
     *

     */
    @Override
    public boolean isForceExtendedSecurity() {
        return this.delegate.isForceExtendedSecurity();
    }

    @Override
    public boolean isUseLease() {
        return this.delegate.isUseLease();
    }

    @Override
    public int getLeaseTimeout() {
        return this.delegate.getLeaseTimeout();
    }

    @Override
    public int getMaxLeases() {