# File lib/active_model/mass_assignment_security.rb, line 119
      def attr_protected(*args)
        options = args.extract_options!
        role = options[:as] || :default

        self._protected_attributes = protected_attributes_configs.dup

        Array(role).each do |name|
          self._protected_attributes[name] = self.protected_attributes(name) + args
        end

        self._uses_mass_assignment_security = true
        self._active_authorizer = self._protected_attributes
      end