} catch (ItemNotFoundException e) {
logger.debug("Item '{}' does not exist.", singleItemConfig.getItem());
}
}
if (itemCfg instanceof GroupConfig) {
GroupConfig groupItemCfg = (GroupConfig) itemCfg;
String groupName = groupItemCfg.getGroup();
try {
Item gItem = itemRegistry.getItem(groupName);
if (gItem instanceof GroupItem) {
GroupItem groupItem = (GroupItem) gItem;
items.addAll(groupItem.getAllMembers());