message: [lang] Fix last commit (missing brace)
diff: @@ -41,6 +41,7 @@ pub enum TypeDescription {
  Array(ArrayTypeDescription),
  /// A concrete `Option` type.
  Option(OptionTypeDescription),
  +}
  /// Describes an option param or return type.
  #[derive(Debug, PartialEq, Eq, Deserialize, Serialize)]
  