public IEnumerator LeftArrow(FocusableObject focusableObject)
 {
     focusableObject.OnArrow(-1, 0);
     yield return(null);
 }
 public IEnumerator UpArrow(FocusableObject focusableObject)
 {
     focusableObject.OnArrow(0, 1);
     yield return(null);
 }