private void AssertExpectedItemValuesExists(BuildLog result, string itemType, params string[] expectedValues)
 {
     DumpLists(result, itemType, expectedValues);
     foreach (var expectedValue in expectedValues)
     {
         result.AssertSingleItemExists(itemType, expectedValue);
     }
     result.AssertExpectedItemGroupCount(itemType, expectedValues.Length);
 }