code: def jwt_refresh_token_required(fn):
      
      @wraps(fn)
      def wrapper(*args, **kwargs):
          verify_jwt_refresh_token_in_request()
          return fn(*args, **kwargs)
      return wrapper
docs: A decorator to protect a Flask endpoint.
  
      If you decorate an endpoint with this, it will ensure that the requester
      has a valid refresh token before allowing the endpoint to be called.