docs: def reindex(self, force=False, background=True):
          """Start jira re-indexing. Returns True if reindexing is in progress or not needed, or False.
  
          If you call reindex() without any parameters it will perform a background reindex only if JIRA thinks it should do it.
  
          :param force: reindex even if JIRA doesn't say this is needed, False by default.
          :param background: reindex in background, slower but does not impact the users, defaults to True.
          """
          # /secure/admin/IndexAdmin.jspa
          # /secure/admin/jira/IndexProgress.jspa?taskId=1
          if background:
              indexingStrategy = 'background'
          else:
              indexingStrategy = 'stoptheworld'
  
          url = self._options['server'] + '/secure/admin/jira/IndexReIndex.jspa'
  
          r = self._session.get(url, headers=self._options['headers'])
          if r.status_code == 503:
              # logging.warning("JIRA returned 503, this could mean that a full reindex is in progress.")
              return 503
  
          if not r.text.find("To perform the re-index now, please go to the") and force is False:
              return True
  
          if r.text.find('All issues are being re-indexed'):
              logging.warning("JIRA re-indexing is already running.")
              return True  # still reindexing is considered still a success
  
          if r.text.find('To perform the re-index now, please go to the') or force:
              r = self._session.post(url, headers=self._options['headers'],
                                     params={"indexingStrategy": indexingStrategy, "reindex": "Re-Index"})
              if r.text.find('All issues are being re-indexed') != -1:
                  return True
              else:
                  logging.error("Failed to reindex jira, probably a bug.")
                  return False