old_contents: """Enable third party extensions."""
  
  from flask_migrate import Migrate
  from flask_sqlalchemy import SQLAlchemy
  from flask_socketio import SocketIO
  from flask_wtf import CsrfProtect
  
  from celery import Celery
  from matl_online.settings import Config
  
  # Change the timeout for celery process initialization
  from celery.concurrency import asynpool
  asynpool.PROC_ALIVE_TIMEOUT = Config.CELERY_PROCESS_INIT_TIMEOUT
  
  db = SQLAlchemy()
  migrate = Migrate()
  socketio = SocketIO()
  celery = Celery(__name__, broker=Config.CELERY_BROKER_URL)
  csrf = CsrfProtect()
  
new_contents: """Enable third party extensions."""
  
  from flask_migrate import Migrate
  from flask_sqlalchemy import SQLAlchemy
  from flask_socketio import SocketIO
  from flask_wtf import CSRFProtect
  
  from celery import Celery
  from matl_online.settings import Config
  
  # Change the timeout for celery process initialization
  from celery.concurrency import asynpool
  asynpool.PROC_ALIVE_TIMEOUT = Config.CELERY_PROCESS_INIT_TIMEOUT
  
  db = SQLAlchemy()
  migrate = Migrate()
  socketio = SocketIO()
  celery = Celery(__name__, broker=Config.CELERY_BROKER_URL)
  csrf = CSRFProtect()
  
subject: Replace deprecated CsrfProtect with CSRFProtect