updateAnimation property
Implementation
late final Animation<double> updateAnimation = TweenSequence([
TweenSequenceItem(
tween: Tween(begin: 1.0, end: 0.0),
weight: 0.5,
),
TweenSequenceItem(
tween: Tween(begin: 0.0, end: 1.0),
weight: 0.5,
),
]).animate(updateAnimController);