{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"let"}]}
        let ty_trait_item = if let Some(trait_item_id) = ty_impl_item.trait_item_def_id {
        let ty_impl_item = tcx.associated_item(impl_item);
            tcx.associated_item(trait_item_id)