docstr: This function is used to save the graph into JSON file for inspection.
code: def save_graph_to_json(
      cls,
      graph,
      save_dumped_graph_path_with_name="./model_fx_graph.json",
  ):
      """This function is used to save the graph into JSON file for inspection."""
  
      # use dumps to transfer the dict to JSON string
      json_graph_str = json.dumps(graph)
      with open(
          save_dumped_graph_path_with_name, "w", encoding="utf-8"
      ) as dumped_graph_file:
          dumped_graph_file.write(json_graph_str)
  
imports: import os
  import torch
  import json
  import string
  import time
  import numpy
  import sys
  import builtins
  import io
label_desc: Use image node_id 41 for calling the Permutation obj's underlying member method code with example usage: obj.save_graph_to_json(cls, graph, save_dumped_graph_path_with_name) without return types