/* (non-Javadoc)
* @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
FTICPackage fTICPackage = (FTICPackage) UiUtil.getSelectedEObject();
Project project = ModelUtil.getProject(fTICPackage);
ProjectSpace projectSpace = WorkspaceManager.getProjectSpace(project);
HistoryProvider provider = new HistoryProvider(projectSpace);
provider.addHistoryListener(new HistoryListener() {