{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
        let trait_ref = self.lower_trait_ref(*modifiers, trait_ref, itctx);
            self.lower_lifetime_binder(trait_ref.ref_id, bound_generic_params);
        let modifiers = self.lower_trait_bound_modifiers(*modifiers);