@Override
	public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
		if (itemPropertyDescriptors == null) {
			super.getPropertyDescriptors(object);

			addIdPropertyDescriptor(object);
			addTypePropertyDescriptor(object);
			
// edited
			addTransformPropertyDescriptor(((Star.Port)object).getTransform(), 
					getString("_UI_TransformPropertyCategory"));
		}
		return itemPropertyDescriptors;
	}
	
	public void addTransformPropertyDescriptor(Transform trans, final String transformFeature){
		TransformItemProvider transIP 
		= (TransformItemProvider)adapterFactory.adapt(trans,
				IItemPropertySource.class);
		List<IItemPropertyDescriptor> descriptors = transIP.getPropertyDescriptors(trans);
		for(Iterator<IItemPropertyDescriptor> it = descriptors.iterator(); it.hasNext();){
			ItemPropertyDescriptor descriptor = (ItemPropertyDescriptor)it.next();
			itemPropertyDescriptors.add(new ItemPropertyDescriptorDecorator(trans, descriptor)
			{
				public String getCategory(Object thisObject){
					return transformFeature;
				}
				public String getId(Object thisObject){
					return transformFeature + getDisplayName(thisObject);
				}
			});

		}
	}

if (itemPropertyDescriptors != null) {
	itemPropertyDescriptors.clear();
}
super.getPropertyDescriptors(object);

// Do your stuff..