{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"ty::Adt(_,"}]}
                        ty::Adt(_, args) => is_instantiable_downstream(None, args),
                    let should_export = match ty.kind() {
                        ty::Closure(_, args) => is_instantiable_downstream(None, args),