PageComposer properties panel only shows properties directly on the backing class defined in the ParametersInfo

In the org.hippoecm.hst.pagecomposer.jaxrs.model.ComponentWrapper there is code like:

ParametersInfo parameterInfo = (ParametersInfo) componentClass.getAnnotation(ParametersInfo.class);
Method[] methods = parameterInfo.type().getDeclaredMethods();
for (Method method : methods) {

The problem is, that is the parameterInfo.type() which is an interface extends from a super interface, we do not get to see the properties from the super interface. Changing

parameterInfo.type().getDeclaredMethods(); into

parameterInfo.type().getMethods();

should solve this