public void SCNNode_AddAnimation()
{
SCNNode c = new SCNNode();
CABasicAnimation a = CABasicAnimation.FromKeyPath("hidden");
NSString key = new NSString("MyKey");
c.AddAnimation(a, key);
CAPropertyAnimation cur = (CAPropertyAnimation)c.GetAnimation(key);
Assert.IsNotNull(cur);
Assert.AreEqual(cur.KeyPath, "hidden");
c.RemoveAnimation(key);
cur = (CAPropertyAnimation)c.GetAnimation(key);
Assert.IsNull(cur);
}