public override void OnDisable()
        {
            base.OnDisable();

            s_SceneHierarchyWindows.Remove(this);

            m_SceneHierarchy.OnDisable();
            m_StageHandling.OnDisable();
        }
        public override void OnDisable()
        {
            base.OnDisable();

            s_SceneHierarchyWindows.Remove(this);

            m_SceneHierarchy.OnDisable();
            m_StageHandling.OnDisable();

            PrefabUtility.prefabInstanceModificationCacheCleared -= OnPrefabInstanceModificationCacheCleared;
        }