floatingActionButton

a floating action button to be displayed by the toolbar. It's recommended to use a FloatingToolbarDefaults.VibrantFloatingActionButton or FloatingToolbarDefaults.StandardFloatingActionButton that is styled to match the colors. Note that the provided FAB's size is controlled by the floating toolbar and animates according to its state. In case a custom FAB is provided, make sure it's set with a Modifier.fillMaxSize to be sized correctly.