code: def reset_to_flows(self, force=False):
          
          super().reset_to_flows(force=force, _meta=self.meta)
          return self
docs: Keeps only the absolute values.
  
          This removes all attributes which can not be aggregated and must be
          recalculated after the aggregation.
  
          Parameters
          ----------
  
          force: boolean, optional
              If True, reset to flows although the system can not be
              recalculated. Default: False