{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"self.inner.borrow_mut().unwrap_region_constraints().make_eqregion("}]}
        self.inner.borrow_mut().unwrap_region_constraints().make_eqregion(
    fn equate_regions(&self, a: ty::Region<'tcx>, b: ty::Region<'tcx>, span: Span) {
            SubregionOrigin::RelateRegionParamBound(span, None),