{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"self.impl_trait_ref(def_id).map(|tr|"}]}
        self.impl_trait_ref(def_id).map(|tr| tr.skip_binder().def_id)
    pub fn trait_id_of_impl(self, def_id: DefId) -> Option<DefId> {
    }