objProp = UIManager.get(SubstanceLookAndFeel.COMBO_POPUP_PROTOTYPE);
if (objProp == null)
return null;
if (objProp instanceof ComboPopupPrototypeCallback) {
ComboPopupPrototypeCallback callback = (ComboPopupPrototypeCallback) objProp;
return callback.getPopupPrototypeDisplayValue(combo);
}
// check if this object is in the model ???
return objProp;
}