{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"this.mark_span_with_reason(DesugaringKind::Async,"}]}
                this.mark_span_with_reason(DesugaringKind::Async, user_body.span, None);
            let desugared_span =
            let user_body = this.expr_drop_temps(desugared_span, this.arena.alloc(user_body));