/// <summary>
/// IntervalProperty property changed handler.
/// </summary>
/// <param name="d">DateTimeAxis2 that changed its Interval.</param>
/// <param name="e">Event arguments.</param>
private static void OnIntervalPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DateTimeAxis source = (DateTimeAxis)d;
source.OnIntervalPropertyChanged();
}
