code: def wait_for_disappearance(self, timeout=120):
          
  
          start = time.time()
          while self.exists():
              self.poco.sleep_for_polling_interval()
              if time.time() - start > timeout:
                  raise PocoTargetTimeout('disappearance', self)
docs: Block and wait until the UI element **disappears** within the given timeout.
  
          Args:
              timeout: maximum waiting time in seconds
  
          Raises:
              PocoTargetTimeout: when timeout