code: def abort_if_todo_doesnt_exist(todo_id):
      if todo_id not in TODOS:
          api.abort(404, "Todo {} doesn't exist".format(todo_id))
  
file_path: flask-restplus/examples/todo.py
imports: from flask import Flask
  from flask_restplus import Api, Resource, fields
  from werkzeug.contrib.fixers import ProxyFix
label_desc: Use image node_id 1 for calling a global function with example usage: abort_if_todo_doesnt_exist(todo_id) without return types