code: def get_streams(self, game=None, channels=None, limit=25, offset=0):
          if isinstance(game, models.Game):
              game = game.name
          channelnames = []
          cparam = None
          if channels:
              for c in channels:
                  if isinstance(c, models.Channel):
                      c = c.name
                  channelnames.append(c)
              cparam = ','.join(channelnames)
          params = {'limit': limit,
                    'offset': offset,
                    'game': game,
                    'channel': cparam}
          r = self.kraken_request('GET', 'streams', params=params)
          return models.Stream.wrap_search(r)