{"ast_node_type":"other","tokens":[{"end":24,"kind":"keyword","start":0,"text":".join(\","}]}
            .join(", ");
            .map(|n| render_region_vid(self.tcx, *n, self.regioncx))
        dot::LabelText::LabelStr(format!("SCC({n}) = {{{nodes_str}}}", n = n.as_usize()).into())