{"ast_node_type":"other","tokens":[{"end":83,"kind":"keyword","start":0,"text":"libc::qos_class_t::QOS_CLASS_DEFAULT"}]}
            libc::qos_class_t::QOS_CLASS_DEFAULT => None, // QoS has never been set
            libc::qos_class_t::QOS_CLASS_USER_INITIATED => Some(QoSClass::UserInitiated),
            libc::qos_class_t::QOS_CLASS_UTILITY => Some(QoSClass::Utility),