{"ast_node_type":"function","tokens":[{"end":74,"kind":"keyword","start":0,"text":"pub(crate)"}]}
    pub(crate) fn to_region_vid(&self, r: ty::Region<'tcx>) -> RegionVid {
    /// See [UniversalRegionIndices::to_region_vid].
        self.indices.to_region_vid(r)