docs: def __skip_updates(self):
          """
          Get and discard all pending updates before first poll of the bot
          :return: total updates skipped
          """
          total = 0
          updates = self.get_updates(offset=self.last_update_id, timeout=1)
          while updates:
              total += len(updates)
              for update in updates:
                  if update.update_id > self.last_update_id:
                      self.last_update_id = update.update_id
              updates = self.get_updates(offset=self.last_update_id + 1, timeout=1)
          return total