* the specified filter parameters, and highlights the specified contentItem.
* If the filter parameters are null, it just returns the page as-is.
*/
public static OverviewPage getOverviewPage(FilterSpec filterParams, Long focusedContentItemId) {
if (overviewPage == null) {
overviewPage = new OverviewPage();
}
if (filterParams != null) {
overviewPage.update(filterParams, focusedContentItemId);
}
return overviewPage;