{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"self.impl_trait_ref(impl_def_id).unwrap()"}]}
        self.impl_trait_ref(impl_def_id).unwrap()
    fn impl_trait_ref(self, impl_def_id: DefId) -> ty::EarlyBinder<'tcx, ty::TraitRef<'tcx>> {
    }