Jetpack Compose ProgressIndicator With Pulsing Alpha Transition Effect / Animation

val progress = ...val infiniteTransition = rememberInfiniteTransition()val alpha by infiniteTransition.animateFloat(    initialValue = 0f,    targetValue = 0.5f,    animationSpec = infiniteRepeatable(        animation = tween(durationMillis = 3000, easing = FastOutSlowInEasing),        repeatMode = RepeatMode.Reverse    ))var modifier = Modifier.fillMaxSize()if (progress < 1.0f) {    // start animation    modifier = modifier.alpha(alpha = 1 - alpha)}LinearProgressIndicator(    progress = progress,    modifier = modifier,    color = MaterialTheme.colors.primary.copy(alpha = 0.3f))