code: def static_file(path):
      if path in [
          "stanza-brat.css",
          "stanza-brat.js",
          "stanza-parseviewer.js",
          "loading.gif",
          "favicon.png",
          "stanza-logo.png",
      ]:
          return app.send_static_file(path)
      elif path in "index.html":
          return app.send_static_file("stanza-brat.html")
      else:
          abort(403)
  
file_path: stanza/stanza/pipeline/demo/demo_server.py
imports: from flask import Flask, request, abort
  import json
  import stanza
  import os
label_desc: Use image node_id 2 for calling a global function with example usage: static_file(path) and returns: app, app