{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"//"}]}
            // layout of `async_drop_in_place<T>::{closure}` in case,
        if self.is_async_drop_in_place_coroutine(def_id) {
            // when T is a coroutine, contains this internal coroutine's ptr in upvars