code: def update_best_f1(self, cur_f1, cur_epoch):
      if cur_f1 > self.target_best_f1:
          self.target_best_f1 = cur_f1
          self.target_best_f1_epoch = cur_epoch
  
file_path: dgl/examples/pytorch/evolveGCN/utils.py
label_desc: Use image node_id 6 for calling the Measure obj's underlying member method code with example usage: obj.update_best_f1(cur_f1, cur_epoch) without return types