/// <summary>Add a single event to the existing event list</summary>
/// <param name="event">a single event</param>
public virtual void AddEvent(TimelineEvent @event)
{
events.AddItem(@event);
}
/// <summary>Add a single event to the existing event list</summary>
/// <param name="event">a single event</param>
public virtual void AddEvent(TimelineEvent @event)
{
events.AddItem(@event);
}