private void InitializeButtons()
{
buttons.Clear();
foreach (Transform child in buttonParent)
{
AppBarButton appBarButton = child.GetComponent <AppBarButton>();
if (appBarButton == null)
{
throw new Exception("Found a transform without an AppBarButton component under buttonTransforms!");
}
appBarButton.InitializeButtonContent(this);
// Set to invisible initially
appBarButton.SetVisible(false);
buttons.Add(appBarButton);
}
}