/// <summary>
/// Enlists a dependency property value into this storyboard instance.
/// </summary>
/// <param name="dpValue">The dependency property value to enlist.</param>
/// <param name="animation">The animation to apply to the dependency property.</param>
internal void Enlist(IDependencyPropertyValue dpValue, AnimationBase animation)
{
Contract.Require(dpValue, "dpValue");
var enlistment = new Enlistment(dpValue, animation);
enlistedDependencyProperties.Add(enlistment);
}