public KeyFrameAnimation(Windows.UI.Composition.KeyFrameAnimation animation)
 {
 }
 public static Windows.UI.Composition.KeyFrameAnimation InsertExpressionKeyFrame <T>(this Windows.UI.Composition.KeyFrameAnimation animation, float normalizedProgressKey, System.Linq.Expressions.Expression <CompositionExpressionToolkit.CompositionLambda <T> > expression, Windows.UI.Composition.CompositionEasingFunction easingFunction = null)
 {
     return(default(Windows.UI.Composition.KeyFrameAnimation));
 }