package eu.etaxonomy.taxeditor.ui.element;
import org.eclipse.jface.util.PropertyChangeEvent;
-import org.eclipse.swt.layout.RowLayout;
import eu.etaxonomy.cdm.api.facade.DerivedUnitFacade;
-import eu.etaxonomy.cdm.common.CdmUtils;
-import eu.etaxonomy.cdm.model.common.TimePeriod;
-import eu.etaxonomy.cdm.model.occurrence.GatheringEvent;
/**
* <p>