if (type == SID.SID_TYPE_DOM_GRP || type == SID.SID_TYPE_ALIAS) {
            try {
                final SID[] children = sid.getGroupMemberSids(file.getServer(), (NtlmPasswordAuthentication) file.getPrincipal(),
                        SID.SID_FLAG_RESOLVE_SIDS);
                for (final SID child : children) {
                    if (!sidSet.contains(child)) {
                        processAllowedSIDs(file, child, sidSet);