import java.util.Arrays;
import java.util.List;
-import org.eclipse.linuxtools.tmf.event.TmfTimestamp;
+import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.AsyncMessage;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.AsyncMessageReturn;
import org.eclipse.linuxtools.tmf.ui.views.uml2sd.core.BaseMessage;