public class AttackState
{
    [SerializeField]
    [EventNames("Hit Start", "Hit End")]
    private ClipTransition _Animation;

    protected virtual void Awake()
    {
        _Animation.Events.SetCallback("Hit Start", OnHitStart);
        _Animation.Events.SetCallback("Hit End", OnHitEnd);
    }

    private void OnHitStart() { }
    private void OnHitEnd() { }
}