alpha

fun Animator.alpha(view: View, alpha: Float, time: TimeSpan = this.defaultTime, easing: Easing = this.defaultEasing)

fun Animator.alpha(view: View, alpha: Double, time: TimeSpan = this.defaultTime, easing: Easing = this.defaultEasing)

fun Animator.alpha(view: View, alpha: Int, time: TimeSpan = this.defaultTime, easing: Easing = this.defaultEasing)