code: async def create_tournament(self, name: str, url: str, tournament_type: TournamentType = TournamentType.single_elimination, **params) -> Tournament:
          
          params.update({
              'name': name,
              'url': url,
              'tournament_type': tournament_type.value,
          })
          res = await self.connection('POST', 'tournaments', 'tournament', **params)
          self._refresh_tournament_from_json(res)
          return self._find_tournament_by_id(res['tournament']['id'])
docs: creates a simple tournament with basic options
  
          |methcoro|
  
          Args:
              name: name of the new tournament
              url: url of the new tournament (http://challonge.com/url)
              tournament_type: Defaults to TournamentType.single_elimination
              params: optional params (see http://api.challonge.com/v1/documents/tournaments/create)
  
          Returns:
              Tournament: the newly created tournament
  
          Raises:
              APIException