code: def step(self, acc, model):
      score = acc
      if self.best_score is None:
          self.best_score = score
          self.save_checkpoint(model)
      elif score < self.best_score:
          self.counter += 1
          print(
              f"EarlyStopping counter: {self.counter} out of {self.patience}"
          )
          if self.counter >= self.patience:
              self.early_stop = True
      else:
          self.best_score = score
          self.save_checkpoint(model)
          self.counter = 0
      return self.early_stop
  
imports: import torch
label_desc: Use image node_id 2 for calling the EarlyStopping obj's underlying member method code with example usage: obj.step(acc, model) and returns: self