/** The CIFS context for NTLM authentication. */
    protected BaseContext cifsContext;

    /**
     * Constructs a JcifsEngine with the specified properties.
     *
     * @param props the properties for configuring the CIFS context
     * @throws CrawlingAccessException if an error occurs during initialization
     */

        sidSet.add(sid);
        if (type == SID.SID_TYPE_DOM_GRP || type == SID.SID_TYPE_ALIAS) {
            try {
                final CIFSContext context = file.getContext();
                final SID[] children = context.getSIDResolver()
                        .getGroupMemberSids(context, file.getServer(), sid.getDomainSid(), sid.getRid(),
                                org.codelibs.jcifs.smb.impl.SID.SID_FLAG_RESOLVE_SIDS);