code: def frontend_metadata(self):
      return base_plugin.FrontendMetadata(es_module_path="/index.js")
  
file_path: tensorboard/tensorboard/examples/plugins/example_basic/tensorboard_plugin_example/plugin.py
imports: import json
  import os
  from tensorboard import plugin_util
  from tensorboard.data import provider
  from tensorboard.plugins import base_plugin
  import werkzeug
  from werkzeug import wrappers
  from tensorboard_plugin_example import metadata
label_desc: Use image node_id 4 for calling the ExamplePlugin obj's underlying member method code with example usage: obj.frontend_metadata() and returns: base_plugin