PREFERRED_MECHS.add(new ASN1ObjectIdentifier("1.2.840.48018.1.2.2"));
    }


    /**
     * Construct a <code>Kerb5Authenticator</code> object with <code>Subject</code>
     * which hold TGT retrieved from KDC. If multiple TGT are contained, the
     * first one will be used to retrieve user principal.
     * 
     * @param subject
     *            represents the user who perform Kerberos authentication.

    int getMaxRequestRetries ();


    /**
     * Property <tt>jcifs.smb.client.strictResourceLifecycle</tt> (bool, default false)
     * 
     * If enabled, SmbFile instances starting with their first use will hold a reference to their tree.
     * This means that trees/sessions/connections won't be idle-disconnected even if there are no other active
     * references (currently executing code, file descriptors).
     *