val any : ?loc:loc -> ?attrs:attrs -> unit -> Migrate_parsetree.Ast_404.Parsetree.pattern
val type_ : ?loc:loc -> ?attrs:attrs -> lid -> Migrate_parsetree.Ast_404.Parsetree.pattern
val unpack : ?loc:loc -> ?attrs:attrs -> str -> Migrate_parsetree.Ast_404.Parsetree.pattern