/**
* Accessor for whether an element is contained in this Set.
*
* @param element The element
* @return Whether it is contained.
*/
public boolean contains(Object element) {
if (useCache && isCacheLoaded) {
// If the "delegate" is already loaded, use it
return delegate.contains(element);
} else if (backingStore != null) {
return backingStore.contains(ownerOP, element);
}
return delegate.contains(element);
}
