private void Open(Popup popup)
        {
            popup.Configure(() =>
            {
                typeof(PopupManager)
                .GetMethod("Close")
                .MakeGenericMethod(popup.GetType())
                .Invoke(this, null);
            });

            OnOpening.SafeInvoke(popup.GetType());
            popup.AnimateIn(() =>
            {
                OnOpened.SafeInvoke(popup.GetType());
            });
        }