private void Start()
{
popupSystem = GetComponent <PopupSystem>();
popupMaterials = new List <PopupSystemMaterial>
{
new PopupSystemMaterial(OnPushNextButton, toNextButton.gameObject.name, false),
new PopupSystemMaterial(OnPushPreviousButton, toPreviousButton.gameObject.name, false),
new PopupSystemMaterial(Close, closeButton.gameObject.name, false),
};
}