code: def switch(self):
          
          t = self.system.dae.t
          for idx in range(0, self.n):
              if t >= self.tl[idx]:
                  if self.en[idx] == 0:
                      self.en[idx] = 1
                      logger.info(
                          'Extended ACE <{}> activated at t = {}.'.format(
                              self.idx[idx], t))
docs: Switch if time for eAgc has come