GroupMarker relationshipGroup = new GroupMarker( relationshipGroupName );
mm.add( relationshipGroup );
ViewSettings viewSettings = graphView.getLabelProvider().getViewSettings();
// relationship types actions
mm.appendToGroup( relationshipGroupName,
new ShowRelationshipTypesAction( graphView, viewSettings.isShowRelationshipTypes() ) );
// relationship labels actions
mm.appendToGroup( relationshipGroupName,
new ShowRelationshipLabelAction( graphView, viewSettings.isShowRelationshipNames() ) );
mm.appendToGroup( relationshipGroupName,
new FilterRelationshipPropertiesAction( graphView, viewSettings.isFilterRelationshipProperties() ) );