{"ast_node_type":"other","tokens":[{"end":78,"kind":"keyword","start":0,"text":"graph::depth_first_search_as_undirected(&coercion_graph,"}]}
            graph::depth_first_search_as_undirected(&coercion_graph, root_vid)
        let affected_unsafe_infer_vars =
                .filter_map(|x| unsafe_infer_vars.get(&x).copied())