code: protected void writeBatchSizeEntry(StringBuilder sb, ExecutionInfo execInfo, List<QueryInfo> queryInfoList) {
          sb.append("\"batchSize\":");
          sb.append(execInfo.getBatchSize());
          sb.append(", ");
      }
docs: Write batch size as json.
  
  <p>default: "batchSize":1,
  
  @param sb            StringBuilder to write
  @param execInfo      execution info
  @param queryInfoList query info list