code: def show(self):
      headers = [
          "node",
          "op_inputs",
          "op_outputs",
          "node_inputs",
          "node_outputs",
          "next",
          "iter_param",
      ]
  
      print(tabulate(self._get_data(), headers=headers))
  
imports: from tabulate import tabulate
label_desc: Use image node_id 3 for calling the GraphVisualizer obj's underlying member method code with example usage: obj.show() without return types