code: def get_current(self):
          
  
          where = slice(self._oldest_frame_idx(), self._pos)
          major_axis = pd.DatetimeIndex(deepcopy(self.date_buf[where]), tz='utc')
          return pd.Panel(self.buffer.values[:, where, :], self.items,
                          major_axis, self.minor_axis, dtype=self.dtype)
docs: Get a Panel that is the current data in view. It is not safe to persist
          these objects because internal data might change