private void OnEnable()
    {
        Instance = (MatchASourse)target;

        selector = new USceneSelector();
    }
    private void OnEnable()
    {
        Instance = (PhotoHuntASourse)target;

        selector = new USceneSelector();
    }
    private void OnEnable()
    {
        Instance = (PermutationsSumSourse)target;

        selector = new USceneSelector();
    }
    private void OnEnable()
    {
        Instance = (MultiSelectSources)target;

        selector = new USceneSelector();
    }