code: def visualizer_hook(self, *args, **kwargs):
      if self.original_visualizer_hook is not None:
          self.original_visualizer_hook(*args, **kwargs)
  
imports: from collections import defaultdict
  import torch
  import tqdm
  from ..utils import common_functions
  from ..utils import inference
  from ..utils.accuracy_calculator import AccuracyCalculator
label_desc: Use image node_id 4 for calling the BaseTester obj's underlying member method code with example usage: obj.visualizer_hook() without return types