*
     * @param query the search term to find related queries for
     * @return an array of related query strings, or empty array if none found
     */
    public String[] getRelatedQueries(final String query) {
        final String key = ComponentUtil.getVirtualHostHelper().getVirtualHostKey();
        final Map<String, String[]> map = relatedQueryMap.get(key);
        if (map != null) {

            buf.append(escapeJson(searchQuery));
            buf.append(",\"requested_time\":");
            buf.append(requestedTime);
            final String[] relatedQueries = relatedQueryHelper.getRelatedQueries(params.getQuery());
            buf.append(",\"related_query\":");
            buf.append(escapeJson(relatedQueries));
            final String[] relatedContents = relatedContentHelper.getRelatedContents(params.getQuery());