docs: async def shuffle_participants(self):
          """ Shuffle participants' seeds
  
          |methcoro|
  
          Note:
              |from_api| Randomize seeds among participants. Only applicable before a tournament has started.
  
          Raises:
              APIException
  
          """
          res = await self.connection('POST', 'tournaments/{}/participants/randomize'.format(self._id))
          self._refresh_participants_from_json(res)