code: public function setReportRequestInfoList($reportRequestInfo)
      {
          if (!$this->_isNumericArray($reportRequestInfo)) {
              $reportRequestInfo = array($reportRequestInfo);
          }
          $this->fields['ReportRequestInfo']['FieldValue'] = $reportRequestInfo;
          return $this;
      }
docs: Sets the value of the ReportRequestInfo.
  
  @param mixed $reportRequestInfo ReportRequestInfo or an array of ReportRequestInfo ReportRequestInfo
  @return $this This instance