@SuppressWarnings("unchecked")
@Override
public CheckObject checkSaveObject(ArticleTypeModel object,
PresentationModel aPresentationModel, WindowInterface window) {
String errorString = null;
ArticleType articleType = (object).getObject();
List<ArticleTypeArticleType> list = (List) aPresentationModel
.getBufferedValue(ArticleTypeModel.PROPERTY_ARTICLE_TYPE_ARTICLE_TYPES);
if (articleType.getArticleTypeId() == null
&& objectList.contains(articleType)) {
errorString = "Kan ikke lagre artikkeltype som finnes fra f�r";
} else if (list != null) {
for (ArticleTypeArticleType ref : list) {
if (ref.getArticleTypeRef().equals(articleType)) {