final String[] relatedQueries = relatedQueryHelper.getRelatedQueries(query);
                    if (relatedQueries.length == 0) {
                        appendQuery(queryBuf, query);
                    } else {
                        queryBuf.append('(');
                        queryBuf.append(quote(query));
                        for (final String s : relatedQueries) {

                RenderDataUtil.register(data, "relatedContents", relatedContents);
                final String[] relatedQueries = relatedQueryHelper.getRelatedQueries(form.getQuery());
                if (relatedQueries.length > 0) {
                    RenderDataUtil.register(data, "relatedQueries", relatedQueries);
                }
            });
        } catch (final InvalidQueryException e) {

            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());