// get <tab/> configuration:
Configuration tabConfig = config.getChild(ELEMENT_TAB, false);
if (tabConfig != null) {
String tabName = tabConfig.getAttribute(ATTRIBUTE_NAME);
String tabGroup = tabConfig.getAttribute(ATTRIBUTE_GROUP);
GUIManager guiMgr = null;
try {
guiMgr = (GUIManager) this.manager.lookup(GUIManager.ROLE);
this.tab = guiMgr.getTab(tabGroup, tabName);
} catch (ServiceException e) {
throw new RuntimeException(e);
} finally {
if (guiMgr != null) {
this.manager.release(guiMgr);