{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"components[scc_idx.as_usize()].insert((reg_var,"}]}
        components[scc_idx.as_usize()].insert((reg_var, *origin));
        let origin = var_to_origin.get(&reg_var).unwrap_or(&RegionCtxt::Unknown);
    }