{"ast_node_type":"variable","tokens":[{"end":61,"kind":"keyword","start":0,"text":"let"}]}
        let current_thread = unsafe { libc::pthread_self() };
    pub(super) fn get_current_thread_qos_class() -> Option<QoSClass> {
        let mut qos_class_raw = libc::qos_class_t::QOS_CLASS_UNSPECIFIED;