message: [ocaml-gen] fix bug with vectors and options
diff: @@ -39,7 +39,7 @@ where
  T: OCamlDesc,
  {
  fn ocaml_desc(env: &Env, generics: &[&str]) -> String {
  - format!("{} array", T::ocaml_desc(env, generics))
  + format!("({}) array", T::ocaml_desc(env, generics))
  }
  fn unique_id() -> u128 {
  @@ -65,7 +65,7 @@ where
  T: OCamlDesc,
  {
  fn ocaml_desc(env: &Env, generics: &[&str]) -> String {
  - format!("{} option", T::ocaml_desc(env, generics))
  + format!("({}) option", T::ocaml_desc(env, generics))
  }
  fn unique_id() -> u128 {
  