{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"self.inner.borrow_mut().unwrap_region_constraints().make_subregion("}]}
        self.inner.borrow_mut().unwrap_region_constraints().make_subregion(
    fn sub_regions(&self, sub: ty::Region<'tcx>, sup: ty::Region<'tcx>, span: Span) {
            SubregionOrigin::RelateRegionParamBound(span, None),