// Overview map layout:
SectionStackSection section1 = new SectionStackSection("Overview map");
section1.setExpanded(true);
overviewMap = new OverviewMap("mapOverview", "app", mapWidget, false, true);
section1.addItem(overviewMap);
sectionStack.addSection(section1);
// LayerTree layout:
SectionStackSection section2 = new SectionStackSection("Layer tree");
section2.setExpanded(true);
LayerTree layerTree = new LayerTree(mapWidget);