{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":".ok_or(MirLowerError::LangItemNotFound(trait_lang_item))?;"}]}
            .ok_or(MirLowerError::LangItemNotFound(trait_lang_item))?;
            .as_trait()
        let deref_fn = deref_trait