{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"self.tcx.impl_trait_ref(impl_def).unwrap()"}]}
        self.tcx.impl_trait_ref(impl_def).unwrap()
    pub fn trait_impl(&self, impl_def: DefId) -> EarlyBinder<'tcx, TraitRef<'tcx>> {
    }