@Override
    public boolean unregister(String groupId) {
        return scheduleEngine.handleUnregister(groupId);
    }
Built-in implementation of third-party schedule engine client corresponding with {@link DolphinScheduleEngine}.
DolphinScheduleClient simply invokes the {@link DolphinScheduleEngine} to register/unregister/update
schedule info, all the logic for invoking the remote scheduling service is implemented in {@link DolphinScheduleEngine}
inlong-manager/manager-schedule/src/main/java/org/apache/inlong/manager/schedule/dolphinscheduler/DolphinScheduleClient.java