{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"libc::qos_class_t::QOS_CLASS_UTILITY"}]}
            libc::qos_class_t::QOS_CLASS_UTILITY => Some(QoSClass::Utility),
            libc::qos_class_t::QOS_CLASS_DEFAULT => None, // QoS has never been set
            libc::qos_class_t::QOS_CLASS_BACKGROUND => Some(QoSClass::Background),