docs: def factory(ec, code=None, token=None, refresh=None, **kwargs):
      """
      Create a token handler
  
      :param code:
      :param token:
      :param refresh:
      :return: TokenHandler instance
      """
  
      TTYPE = {'code': 'A', 'token': 'T', 'refresh': 'R'}
  
      args = {}
  
      if code:
          args['code_handler'] = init_token_handler(ec, code, TTYPE['code'])
      if token:
          args['access_token_handler'] = init_token_handler(ec, token, TTYPE['token'])
      if refresh:
          args['refresh_token_handler'] = init_token_handler(ec, token, TTYPE['refresh'])
  
      return TokenHandler(**args)