Thing.Polytype t = [ | `Comment of Comment.t| `User of User.t| `Link of Link.t| `Message of Message.t| `Subreddit of Subreddit.t| `Award of Award.t| `More_comments of More_comments.t| `Modmail_conversation of Modmail_conversation.t ]val sexp_of_t : t -> Sexplib0.Sexp.tval t_of_sexp : Sexplib0.Sexp.t -> tval __t_of_sexp__ : Sexplib0.Sexp.t -> tval t_of_jsonaf : Jsonaf.t -> [> t ]val fullname : [< t ] -> [> Fullname.t ]