{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"if"}]}
                if let AggregateKind::Coroutine(def_id, ..) = kind.as_ref()
            Rvalue::Aggregate(kind, ..) => {
                    && let Some(coroutine_kind) = self.tcx.coroutine_kind(def_id)