Since MAGNOLIA-3011, ObservedComponentFactory.newInstance() can return a new instance of the request object even if the observed path does not exist yet, as long as it's a concrete class. If the object is requested by interface, we could return a null-object implementation of the interface. (Proxytoy's null object proxy) for example is such an implementation)

There's a currently failing/commented out test, see: info.magnolia.objectfactory.ObservedComponentFactoryTest#testReturnsANullProxyUntilPathExistsForNonConcreteTypes