@Override
    public void addListener(LifecycleListener listener) {
        listener.onStart();
    }
A {@link Lifecycle} implementation for tracking and notifying listeners of
{@link android.app.Application} lifecycle events.

<p>
    Since there are essentially no {@link android.app.Application} lifecycle events, this class simply defaults to
    notifying new listeners that they are started.
</p>
core/src/main/java/com/bumptech/glide/manager/ApplicationLifecycle.java