...
Custom extensions can depend on Java libraries other than com.parasoft.api.jar. For details in Virtualize, see Configuring External Dependencies.
You can externalize any string displayed in the GUI to support different languages. For details in Virtualize, see Localizing GUI Text.
If you are using an existing extension and later create a new version of that extension that has a different set of GUI options, you can use a version updater to update your saved .tst (SOAtest) or .pva, .pvn (Virtualize) files to adapt them to the new set of options. For details on updating Virtualize artifacts, see Updating GUI Fields for a New Version .Virt.