In this case you will have to extend BrainFuckingApp from Application class and write:

private static InstanceStorage instanceStorage;
private static LazyInstanceStorage lazyInstanceStorage;
@Override
public void onCreate() {
    super.onCreate();
    Context appContext = getApplicationContext();
      
    List<Object> singleInstances = //list of singletons
    storage = new InstanceStorage(singleInstances);
      
    List<? extends LazyInstance> lazyInstances = //list of initializers
    lazyInstanceStorage = new LazyInstanceStorage(lazyInstances);
}
public static <T> T getGlobal(Class<T> clazz) {
    return instanceStorage.get(clazz);
}
public static <T> T getLazyGlobal(Class<T> clazz) {
    return lazyInstanceStorage.get(clazz);
}