Octgn.Play.Card.SetFilter C# (CSharp) Method

        internal void SetFilter(Color? value)
        {
            if (value == _filter) return;
            bool currentState = IsFiltered;
            _filter = value;
            OnPropertyChanged("FilterColor");
            if (currentState != IsFiltered) OnPropertyChanged("IsFiltered");
        }

 public void Filter(Card card, Color? color)
 { card.SetFilter(color); }