import org.eclipse.linuxtools.tmf.core.event.TmfEvent;
import org.eclipse.linuxtools.tmf.core.event.TmfEventField;
import org.eclipse.linuxtools.tmf.core.event.TmfEventType;
-import org.eclipse.linuxtools.tmf.core.event.TmfTimestamp;
+import org.eclipse.linuxtools.tmf.core.timestamp.TmfTimestamp;
import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.Messages;
import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfBaseColumnData;
import org.eclipse.linuxtools.tmf.ui.viewers.statistics.model.TmfBaseColumnData.ITmfColumnPercentageProvider;