You can identify your property type in one of two ways:

If you use the indirect method, set the userPropertyDescriptors property of the GSARepository component to include your type (or, in the alternative, call the registerPropertyDescriptorClass() method at some point before the XML repository definition file is loaded).

Most users find the direct Java class approach simpler. In either case, you set the <property> tag attribute property-type to the user-defined property type.