code: def save_html(self):
      html = self.render_html()
      with open(self._output_file, "w") as f:
          f.write(html)
  
file_path: mace/tools/python/visualize/visualize_model.py
imports: import os
  import json
  import numpy
  from google.protobuf.json_format import _Printer
label_desc: Use image node_id 3 for calling the ModelVisualizer obj's underlying member method code with example usage: obj.save_html() without return types