How to get a route layout reference in the view?

Flow
1 
@Route(value = "Inventory", layout = MainView.class)
public class InventoryView extends HorizontalLayout implements HasUrlParameter<String>
{
    @Override
    public void setParameter( BeforeEvent beforeEvent, @WildcardParameter String paramString )
    {
        beforeEvent.getUI().getRouter();
		beforeEvent.getLayouts();
    }
}

Hi, I am just wondering is there anyway to get a reference to the MainView object configured in the Route? I need to hide something in the MainView when we landing the “Inventory” page.

I tried beforeEvent.getUI().getRouter() and beforeEvent.getLayouts(), but seems can only get the Class rather than a object reference.