protected void initInstances() {
HorizontalLayout instancesHeader = new HorizontalLayout();
instancesHeader.setSpacing(true);
instancesHeader.setWidth(100, UNITS_PERCENTAGE);
instancesHeader.addStyleName(ExplorerLayout.STYLE_DETAIL_BLOCK);
addDetailComponent(instancesHeader);
initInstancesTitle(instancesHeader);
instancesLayout = new HorizontalLayout();
instancesLayout.setWidth(100, UNITS_PERCENTAGE);