*/
public void unsetDeclaredProperty(int propertyIndex) {
SDOProperty declaredProperty = (SDOProperty) dataObject.getType().getDeclaredProperties().get(propertyIndex);
Mapping mapping = this.getJAXBMappingForProperty(declaredProperty);
if (declaredProperty.isMany()) {
ContainerMapping containerMapping = (ContainerMapping) mapping;
ContainerPolicy containerPolicy = containerMapping.getContainerPolicy();
// OLD VALUE
if (mapping.isAbstractCompositeCollectionMapping()) {
XMLCompositeCollectionMapping compositeMapping = (XMLCompositeCollectionMapping) mapping;
if (compositeMapping.getContainerAccessor() != null) {