code: def return_template(name: str | None = None) -> str:
      return render_template("index.html", name=name)
  
imports: from __future__ import annotations
  import typing
  from http import HTTPStatus
  from flask import Flask
  from flask import jsonify
  from flask import stream_template
  from flask.templating import render_template
  from flask.views import View
  from flask.wrappers import Response
label_desc: Use image node_id 13 for calling a global function with example usage: return_template(name) and returns: render_template