@TestOnly
  public <T extends DomElement> void registerFileDescription(final DomFileDescription<T> description, Disposable parentDisposable) {
    clearCache();
    applicationComponent.registerFileDescription(description);
    Disposer.register(parentDisposable, () -> applicationComponent.removeDescription(description));
  }
@TestOnly
  public <T extends DomElement> void registerFileDescription(final DomFileDescription<T> description, Disposable parentDisposable)