public void SetAttributeValueDiscarded()
{
InstanceHandle keyClass = oms.GetInstance(KnownInstanceGuids.Classes.Class);
InstanceHandle keyAttributeName = oms.GetInstance(KnownAttributeGuids.Text.Name);
oms.BeginTransaction();
oms.SetAttributeValue(keyClass, keyAttributeName, SAV_TEST_VALUE);
oms.DiscardTransaction();
string value = oms.GetAttributeValue <string>(keyClass, keyAttributeName);
Assert.IsNull(value);
}