// Create a minimal valid security descriptor binary
        // Format: revision(1) + sbz1(1) + control(2) + ownerOffset(4) + groupOffset(4) + saclOffset(4) + daclOffset(4) = 20 bytes minimum
        byte[] securityDescriptorBytes = new byte[20];
        securityDescriptorBytes[0] = 1; // revision
        securityDescriptorBytes[1] = 0; // sbz1
        // control flags (2 bytes)
        securityDescriptorBytes[2] = 0;

        response = spy(response);
        when(response.getHeaderStart()).thenReturn(0);

        // Write minimal SecurityDescriptor header (20 bytes)
        buffer[20] = 1; // Revision
        buffer[21] = 0; // Sbz1
        SMBUtil.writeInt2(0x8004, buffer, 22); // Control flags
        SMBUtil.writeInt4(0, buffer, 24); // Owner offset
        SMBUtil.writeInt4(0, buffer, 28); // Group offset

    assertThat(j.useForNull("00").join(entriesWithNulls.iterator())).isEqualTo("a:00;00:b");

    StringBuilder sb1 = new StringBuilder();
    j.appendTo(sb1, ImmutableMultimap.of(1, 2, 3, 4, 5, 6, 1, 3, 5, 10).entries());
    assertThat(sb1.toString()).isEqualTo("1:2;1:3;3:4;5:6;5:10");

    StringBuilder sb2 = new StringBuilder();

vUc}gòzŠYSqTO¬v`w’‹¯¦§‘ü[ 8áñ.}¨ò=ò„Ek@ïjrsJ¾Aeæ©zãqmp¨o|þO{xˆæRCÙ]eZ¢LGSìܲwònoŠ—U`= qÖ\ H¬†:ñyòz€i¦Kct¦ævo}}ï|†\ßrèátw¼Wl¸Vâm¨pU_z†wãMfûR}¦Jñ¢ ^|VVœ½£• ‹®¸¸´¾‘ˆ ’ŒŠ ClHˆè¥½&ýô 1kNd®zøG¾Öwo@†w^eH»¦ i & 2„!yM„oeZ†ßQK¾r^e„†Tw__Ip x{‚O\IKzïˆxßMmeÜSª¼SBz[Gf¨ñ@tKIVq4€}VD öDíSÉï þÜÁ<ÅíÒÀÍÆîõ Ñj2ÜPq ?kx› ¾IcDTEr¸Ö^moC†{{x CjqY<å+`n=;ÜŠy_]òA°iò[¾ ½«gk}Ð}xû4 ï¢TyU~’†ÕyEr¦qY²Vpï² ûZ !~YExzˆàYuj¼åu]e{z~huòG°VñU~º² eiˆ­V À 7Eqò ÄOûp %j_GòȺJQMô§¼¯ÜmSZ½ysivq½÷ @ûY§oô}w`V«_å·¾Nñ~°}ñre¨iV`w~e}@ûYl _l„Iɯ¦%¾xøgª@o{Rºom_Qãvfding...