{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"self.deduce_future_output_from_obligations(expr_def_id).unwrap_or_else(||"}]}
                    self.deduce_future_output_from_obligations(expr_def_id).unwrap_or_else(|| {
                    debug!("closure is async fn body");
                        // AFAIK, deducing the future output