{"ast_node_type":"variable","tokens":[{"end":17,"kind":"keyword","start":0,"text":"let"}]}
    let data_id =
    let alloc = fx.tcx.global_alloc(alloc_id).unwrap_memory();
        data_id_for_alloc_id(&mut fx.constants_cx, fx.module, alloc_id, alloc.inner().mutability);