code: public void setExportFormat(com.google.api.ads.admanager.axis.v201902.ExportFormat exportFormat) {
          this.exportFormat = exportFormat;
      }
docs: Sets the exportFormat value for this ReportDownloadOptions.
  
  @param exportFormat   * The {@link ExportFormat} used to generate the report.
  Default value is {@link ExportFormat#CSV_DUMP}.