code: def reset_all_to_flows(self, force=False):
          
          self.reset_to_flows(force=force)
          [ee.reset_to_flows(force=force)
           for ee in self.get_extensions(data=True)]
          self.meta._add_modify("Reset full system to absolute flows")
          return self
docs: Resets the IOSystem and all extensions to absolute flows
  
          This method calls reset_to_flows for the IOSystem and for
          all Extensions in the system.
  
          Parameters
          ----------
  
          force: boolean, optional
              If True, reset to flows although the system can not be
              recalculated. Default: False