With Java9 having impl_reapplyCss() removed as a public method it is impossible to implement a custom control who provides a font-property.

To appropriately implement such a property one has to trigger a CSS-Pass manually in case the property is not defined through CSS (see implementation in Labeled)

Possible solutions:
* make reapplyCss at least protected
* adjust the implementation in StyleablePropertyFactory to use the same logic as in Labeled or provide a new factory method who creates such a property