protected String[] searchFields;

    /** Set of fields that can be searched against for O(1) lookup */
    protected Set<String> searchFieldSet;

    /** Array of fields that can be used for faceted search */
    protected String[] facetFields;

    /** Set of fields that can be used for faceted search for O(1) lookup */
    protected Set<String> facetFieldSet;

        /** Array of SIDs to lookup. */
        public LsarSidArray sids;
        /** Referenced domain list returned from lookup. */
        public LsarRefDomainList domains;
        /** Array of translated names. */
        public LsarTransNameArray names;
        /** Lookup level. */
        public short level;
        /** Count of SIDs to lookup. */
        public int count;

        /**

        /** Array of SIDs to lookup. */
        public LsarSidArray sids;
        /** Referenced domain list returned from lookup. */
        public LsarRefDomainList domains;
        /** Array of translated names. */
        public LsarTransNameArray names;
        /** Lookup level. */
        public short level;
        /** Count of SIDs to lookup. */
        public int count;

        /**

                 * for the addresses hostname or failed lookups for one type will
                 * be cached and cause other types to fail even though they may
                 * not be the authority for the name. For example, if a WINS lookup
                 * for FOO fails and caches unknownAddress for FOO, a subsequent
                 * lookup for FOO using BCAST should not fail because of that

            if (!Character.isDigit(hostname.charAt(i))) {
                return false;
            }
        }
        return true;
    }

    /**
     * Lookup <code>hostname</code> and return it's <code>UniAddress</code>. If the
     * <code>possibleNTDomainOrWorkgroup</code> parameter is <code>true</code> an
     * addtional name query will be performed to locate a master browser.

                 * for the addresses hostname or failed lookups for one type will
                 * be cached and cause other types to fail even though they may
                 * not be the authority for the name. For example, if a WINS lookup
                 * for FOO fails and caches unknownAddress for FOO, a subsequent
                 * lookup for FOO using BCAST should not fail because of that

        NbtAddress addr;

        if (name.hexCode == 0x1d && svr == null) {
            svr = CLIENT.baddr; // bit of a hack but saves a lookup
        }
        name.srcHashCode = svr != null ? svr.hashCode() : 0;
        addr = getCachedAddress(name);

        if (addr == null) {
            addr = (NbtAddress) checkLookupTable(name);

            // While we could look up the domain controller/KDC we cannot really make the java kerberos implementation
            // use a KDC of our choice.
            // A potential workaround would be to try to get the server FQDN by reverse lookup, but this might have
            // security implications and also is not how Microsoft does it.

                    links = null;
                }

                if (links != null) {
                    final String link = "\\";

                    /* Lookup the domain based DFS root target referral. Note the
                     * path is just "\" and not "\example.com\root".
                     */
                    dr = (DfsReferral) links.map.get(link);

        }
        return SortBuilders.fieldSort(field).order(order);
    }

    /**
     * Checks if the specified field is a search field.
     * Uses O(1) Set lookup for improved performance.
     * @param field The field name to check.
     * @return True if the field is a search field, false otherwise.
     */
    protected boolean isSearchField(final String field) {