code: def save(self):
      data = {
          "input_size": self.input_size,
          "hidden_size": self.hidden_size,
          "output_size": self.output_size,
          "version": self.version,
      }
      return json.dumps(data)
  
file_path: TTS/TTS/tts/layers/bark/hubert/tokenizer.py
imports: import json
  import os.path
  from zipfile import ZipFile
  import numpy
  import torch
  from torch import nn, optim
label_desc: Use image node_id 3 for calling the Data obj's underlying member method code with example usage: obj.save() and returns: json