{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"self.inner.borrow_mut().unwrap_region_constraints().make_eqregion("}]}
                    self.inner.borrow_mut().unwrap_region_constraints().make_eqregion(
                (GenericArgKind::Lifetime(v1), GenericArgKind::Lifetime(v2)) => {
                        SubregionOrigin::RelateRegionParamBound(cause.span, None),