{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"ty::VariantDiscr::Relative(0)"}]}
            ty::VariantDiscr::Relative(0) => (tcx.def_span(var.def_id), format!("`{dis}`")),
            // This should not happen.
            ty::VariantDiscr::Relative(distance_to_explicit) => {