def _roll_data(self):

        self.buffer.values[:, :self._window, :] = \
            self.buffer.values[:, -self._window:, :]
        self.date_buf[:self._window] = self.date_buf[-self._window:]
        self._pos = self._window
Check validity of tokens and return them as ready to be passed to the Node class
dataset/ETHPy150Open quantopian/zipline/zipline/utils/data.py/MutableIndexRollingPanel._roll_data--crossover with--dataset/ETHPy150Open twidi/django-adv-cache-tag/adv_cache_tag/tests/testproject/adv_cache_test_app/templatetags/adv_cache_test.py/TestCacheTag.get_template_node_arguments