{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"this.alloc_expr_desugared_with_ptr("}]}
                        this.alloc_expr_desugared_with_ptr(
                        let expr = this.collect_expr(e);
                            Expr::Async { id: None, statements: Box::new([]), tail: Some(expr) },