protected void _removeSortOrderingWithKey(String aKey) {
int anIndex = 0;
EOSortOrdering aSortOrdering = null;
WODisplayGroup aDisplayGroup = displayGroup();
NSArray<EOSortOrdering> sortOrderings = aDisplayGroup.sortOrderings();
if (sortOrderings!=null) {
NSMutableArray<EOSortOrdering> aSortOrderingArray = sortOrderings.mutableClone();
Enumeration anEnumerator = aSortOrderingArray.objectEnumerator();
while (anEnumerator.hasMoreElements()) {
aSortOrdering = (EOSortOrdering) anEnumerator.nextElement();