{"ast_node_type":"other","tokens":[{"end":54,"kind":"keyword","start":0,"text":"hir::IsAsync::Async(self.lower_span(span))"}]}
            hir::IsAsync::Async(self.lower_span(span))
        let asyncness = if let Some(CoroutineKind::Async { span, .. }) = h.coroutine_kind {
        } else {