class_docstr: Object to render charts as HTML, with a unique output div each time
code: def output_div(self) -> str:
      return self._output_div.format(uuid.uuid4().hex)
  
imports: import json
  import pkgutil
  import textwrap
  from typing import Callable, Dict, Optional, Tuple, Any, Union
  import uuid
  from ._vegafusion_data import compile_with_vegafusion, using_vegafusion
  from .plugin_registry import PluginRegistry, PluginEnabler
  from .mimebundle import spec_to_mimebundle
  from .schemapi import validate_jsonschema
label_desc: Use image node_id 2 for calling the HTMLRenderer obj's underlying member method code with example usage: obj.output_div() and returns: self