import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
-import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
+import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.SDView;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.AsyncMessageReturn;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.BasicExecutionOccurrence;