code: def _serve_js(self, request):
      del request  # unused
      filepath = os.path.join(
          os.path.dirname(__file__), "static", "index.js"
      )
      with open(filepath) as infile:
          contents = infile.read()
      return werkzeug.Response(contents, content_type="text/javascript")
  
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 5 for calling the ExamplePlugin obj's underlying member method code with example usage: obj._serve_js(request) and returns: werkzeug