{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"}"}]}
                            } else if self.tcx.needs_coroutine_by_move_body_def_id(def_id)
                                    .or_else(|| self.tcx.coroutine_layout(def_id, args).ok())
                                && let ty::ClosureKind::FnOnce =