@Override
        public Object[] getChildren(Object parentElement) {
            if (groupingColumn != null && parentElement instanceof ObjectsGroupingWrapper) {
                return ((ObjectsGroupingWrapper) parentElement).groupedElements.toArray();
            }
            return new Object[0];
        }
Searcher. Filters elements by name and description
plugins/org.jkiss.dbeaver.ui.navigator/src/org/jkiss/dbeaver/ui/navigator/itemlist/ObjectListControl.java