code: def _fix_review_dates(self, item):
          
  
          for date_field in ['timestamp', 'createdOn', 'lastUpdated']:
              if date_field in item.keys():
                  date_ts = item[date_field]
                  item[date_field] = unixtime_to_datetime(date_ts).isoformat()
  
          if 'patchSets' in item.keys():
              for patch in item['patchSets']:
                  pdate_ts = patch['createdOn']
                  patch['createdOn'] = unixtime_to_datetime(pdate_ts).isoformat()
  
                  if 'approvals' in patch:
                      for approval in patch['approvals']:
                          adate_ts = approval['grantedOn']
                          approval['grantedOn'] = unixtime_to_datetime(adate_ts).isoformat()
  
          if 'comments' in item.keys():
              for comment in item['comments']:
                  cdate_ts = comment['timestamp']
                  comment['timestamp'] = unixtime_to_datetime(cdate_ts).isoformat()
docs: Convert dates so ES detect them