/// <summary>
/// Adds a BlendShapeAnimation as a child of this AnimationCollection
/// </summary>
/// <param name="animationCollection">The target animation collection</param>
/// <param name="target">The target SkinnedMeshRenderer</param>
/// <param name="blendShapeIndex">The Blend Shape Index</param>
/// <param name="from">From value</param>
/// <param name="to">To value</param>
/// <param name="duration">Duration of the animation</param>
/// <param name="easingFunction">The easing function for the interpolation</param>
/// <returns>Returns this AnimationCollection to comply with fluent interface</returns>
public static AnimationCollection BlendShape(this AnimationCollection animationCollection, SkinnedMeshRenderer target, int blendShapeIndex,
float from = 0, float to = 100f, float duration = 1.0f, Func <float, float> easingFunction = null)
{
return(animationCollection.Add(target.Blend(blendShapeIndex, from, to, duration, easingFunction)));
}