Retrieve linked test cases from a Work Item

I have to retrieve information about the Test Cases that are linked to a given Work Item. I am using RTC 5.0.1 and Java API.

Thanks to other questions and blogposts I have managed to get throught the links of a Work Item, but I am stuck on how to retrieve the TestCase itself. Is there any way to get the Test Cases?

private void getLinks(ITeamRepository repo, IWorkItem wi) throws TeamRepositoryException{

        ILinkManager linkManager = (ILinkManager) repo.getClientLibrary(ILinkManager.class);

        IItemReference itemReference = linkManager.referenceFactory().createReferenceToItem(wi);

        ILinkCollection linkCollection = linkManager.findLinksBySource(itemReference, null).getAllLinksFromHereOn();

        System.out.println("\tWorkItem has " + linkCollection.size() + " links");

        for (ILink link: linkCollection) {

            IItemHandle linkHandle = (IItemHandle) link.getTargetRef().resolve();

            System.out.println("\t" + link.getThisEndpointDescriptor(link.getTargetRef()).getDisplayName() + " " + link.getTargetRef().getClass());

        }

    }

This method currently outputs:

	Work Item has 1 links

	Tested By Test Case class com.ibm.team.links.internal.links.impl.ReferenceImpl