example: "(Fess OR n2sm)"
                  requested_time:
                    type: integer
                    format: int64
                    example: 1507822131845
                  related_query:
                    type: array
                    items:
                      type: string
                    example: ["aaa"]
                  related_contents:
                    type: array

    //                                                                       =============
    @Override
    public String asTableDbName() {
        return "related_query";
    }

    @Override
    public String xgetAliasName() {
        return "related_query";
    }

    // ===================================================================================

            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());
            buf.append(",\"related_contents\":");

                "fess_config.key_match", //
                "fess_config.label_type", //
                "fess_config.path_mapping", //
                "fess_config.related_content", //
                "fess_config.related_query", //
                "fess_config.request_header", //
                "fess_config.role_type", //
                "fess_config.scheduled_job", //
                "fess_config.thumbnail_queue", //