private void handleSubpropertyOf(OntProperty p, OntProperty ancestor) {
List<RDFNode> list = ancestor.listPropertyValues(RDFS.subPropertyOf).toList();
for (RDFNode node : list) {
if (!node.canAs(OntProperty.class)) continue;
OntProperty superProperty = node.as(OntProperty.class);
if (superProperty.equals(ancestor)) continue;
addFields(p, superProperty);
handleSubpropertyOf(p, superProperty);
}
}
