{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"for"}]}
        for (index, state_tys) in args.state_tys(coroutine_def_id, self.tcx).enumerate() {
        let mut cases = Vec::with_capacity(args.state_tys(coroutine_def_id, self.tcx).count());
            let variant_index = VariantIdx::new(index);