{"ast_node_type":"other","tokens":[{"end":81,"kind":"keyword","start":0,"text":"self.open_drop_for_tuple(args.as_coroutine_closure().upvar_tys())"}]}
                self.open_drop_for_tuple(args.as_coroutine_closure().upvar_tys())
            ty::CoroutineClosure(_, args) => {
            }