// toString should reconstruct exact textual form
            assertEquals("S-1-5-21-1-2-3-1029", sid.toString());
            // RID is the last subauthority
            assertEquals(1029, sid.getRid());
            // getDomainSid should drop the last subauthority
            assertEquals("S-1-5-21-1-2-3", sid.getDomainSid().toString());
        }

        @Test

	 * 
	 * typedef struct _SID {
	 *    UCHAR Revision;
	 *    UCHAR SubAuthorityCount;
	 *    SID_IDENTIFIER_AUTHORITY IdentifierAuthority;
	 *    [size_is(SubAuthorityCount)] ULONG SubAuthority[*];
	 * } SID, *PSID;
	 */

	typedef struct {
		uint8_t revision;
		uint8_t sub_authority_count;
		uint8_t identifier_authority[6];
		[size_is(sub_authority_count)] uint32_t sub_authority[*];
	} sid_t;

	 * 
	 * typedef struct _SID {
	 *    UCHAR Revision;
	 *    UCHAR SubAuthorityCount;
	 *    SID_IDENTIFIER_AUTHORITY IdentifierAuthority;
	 *    [size_is(SubAuthorityCount)] ULONG SubAuthority[*];
	 * } SID, *PSID;
	 */

	typedef struct {
		uint8_t revision;
		uint8_t sub_authority_count;
		uint8_t identifier_authority[6];
		[size_is(sub_authority_count)] uint32_t sub_authority[*];
	} sid_t;

        buffer.putInt(0); // SubAuthority

        // Group SID at offset 40
        buffer.position(40);
        buffer.put((byte) 0x01); // Revision
        buffer.put((byte) 0x01); // SubAuthorityCount
        buffer.put(new byte[] { 0, 0, 0, 0, 0, 2 }); // IdentifierAuthority
        buffer.putInt(0); // SubAuthority

        // DACL at offset 60
        buffer.position(60);

    /**
     * Gets the domain SID for this SID.
     *
     * @return domain SID
     */
    SID getDomainSid();

    /**
     * Get the RID
     *
     * This is the last subauthority identifier
     *
     * @return the RID
     */
    int getRid();

    /**
     * Return a String representing this SID ideal for display to

    public SID getDomainSid() {
        return new SID(this, SID_TYPE_DOMAIN, this.domainName, null, getType() != SID_TYPE_DOMAIN);
    }

    /**
     * Get the RID
     *
     * This is the last subauthority identifier
     *
     * @return the RID
     */
    @Override
    public int getRid() {
        if (getType() == SID_TYPE_DOMAIN) {