private static void assert_has_default_property_values(DoubleCollectionModel model)
{
Assert.Equal(0, model.Count);
Assert.Null(model.Current);
Assert.Equal(DeltaType.None, model.CurrentDeltaType);
Assert.Null(model.Maximum);
Assert.Null(model.Mean);
Assert.Equal(DeltaType.None, model.MeanDeltaType);
Assert.Null(model.Minimum);
Assert.Null(model.Range);
Assert.Null(model.StandardDeviation);
Assert.Empty(model.Items);
}