private OptomizedObservableCollection<IDataListItem> GetInputTestDataDataNames()
{
const int numberOfRecords = 6;
const int numberOfRecordFields = 2;
OptomizedObservableCollection<IDataListItem> items = new OptomizedObservableCollection<IDataListItem>();
items.AddRange(GetDataListItemScalar());
items.AddRange(CreateTestDataListItemRecords(numberOfRecords, numberOfRecordFields));
return items;
}