How to use the druid-query-toolkit.isFirstRowHeader function in druid-query-toolkit

}
        } else {
          try {
            const runeResultResp = await axios.post('/druid/v2', jsonQuery);
            endTime = new Date();
            rawQueryResult = runeResultResp.data;
            queryId = runeResultResp.headers['x-druid-query-id'];
          } catch (e) {
            throw new Error(getDruidErrorMessage(e));
          }
        }

        const queryResult = normalizeQueryResult(
          rawQueryResult,
          shouldIncludeTimestamp(jsonQuery),
          isFirstRowHeader(jsonQuery),
        );
        return {
          queryResult,
          queryExtraInfo: {
            queryId,
            sqlQueryId,
            startTime,
            endTime,
            numResults: queryResult.rows.length,
            wrapQueryLimit,
          },
          parsedQuery,
        };
      },
      onStateChange: ({ result, loading, error }) => {