{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":")"}]}
    ) -> Result<Option<I::DefId>, I::ErrorGuaranteed> {
        impl_def_id: I::DefId,
        self.delegate.fetch_eligible_assoc_item(goal_trait_ref, trait_assoc_def_id, impl_def_id)