private void OnClick(Button button)
 {
     buttons.ForEach(btn => btn.targetGraphic.color = btn.colors.normalColor);
     button.targetGraphic.color = button.colors.pressedColor;
     ToggleButtonClickEvent.Invoke(buttons.IndexOf(button));
 }
 public void InvokeToggleButtonClickEvent()
 {
     ToggleButtonClickEvent.Invoke(toggleButton, null);
 }