code: def load(self):
      
      print "Loading data for %s..." % self.getName()
      self._dataHandle = self._stream.data(
        since=self._since, until=self._until, 
        limit=self._limit, aggregate=self._aggregate
      )
      self._data = self._dataHandle.data()
      self._headers = self._dataHandle.headers()
      print "Loaded %i rows." % len(self)
docs: Loads this stream by calling River View for data.