/**
     * SID type for an invalid SID.
     */
    public static final int SID_TYPE_INVALID = 7;

    /**
     * SID type for an unknown SID.
     */
    public static final int SID_TYPE_UNKNOWN = 8;

    /**
     * SID type for a non-use SID.
     */
    public static final int SID_TYPE_USE_NONE = 0;

    /**
     * SID type for a user.
     */
    public static final int SID_TYPE_USER = 1;