code: def mutation_jwt_required(fn):
      
      @wraps(fn)
      def wrapper(cls, *args, **kwargs):
          token = kwargs.pop(current_app.config['JWT_TOKEN_ARGUMENT_NAME'])
          try:
              verify_jwt_in_argument(token)
          except Exception as e:
              return cls(AuthInfoField(message=str(e)))
  
          return fn(cls, *args, **kwargs)
      return wrapper
docs: A decorator to protect a mutation.
  
      If you decorate a mutation with this, it will ensure that the requester
      has a valid access token before allowing the mutation to be called. This
      does not check the freshness of the access token.