{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"_"}]}
            _ if ty.references_error() => return None,
            ty::Never if is_input => return None,
            ty::Adt(adt, args) if self.tcx().is_lang_item(adt.did(), LangItem::MaybeUninit) => {