{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
        let opaque_ty_hir_id = self.lower_node_id(opaque_ty_node_id);
        let opaque_ty_def_id = self.local_def_id(opaque_ty_node_id);
        debug!(?opaque_ty_def_id, ?opaque_ty_hir_id);