rtcEngine$onLicenseWillExpire method
@hidden internal use only @detail callback @author wangyu.1705 @brief license 过期时间提醒 @param engine ByteRTCEngine{@link #ByteRTCEngine} 对象 @param days 过期时间天数
Implementation
FutureOr<void> rtcEngine$onLicenseWillExpire(
ByteRTCEngine engine, NSInteger days) async {}