{"ast_node_type":"variable","tokens":[{"end":52,"kind":"keyword","start":0,"text":"let"}]}
    let init_ty = cx.type_func(&[], cx.type_void());
    let unregister_lib_decl = declare_offload_fn(&cx, "__tgt_unregister_lib", mapper_fn_ty);
    let init_rtls_decl = declare_offload_fn(cx, "__tgt_init_all_rtls", init_ty);