code: def set_report_recipients(self, report, recipients):
          
          to_set = report.getRecipients()
          for recipient in recipients:
              if recipient not in to_set:
                  to_set.append(recipient)
          report.setRecipients(to_set)
docs: Set recipients to the reports w/o overwriting the old ones
  
          :param reports: list of ARReports
          :param recipients: list of name,email strings