public static bool?IsEnabled(this LayerConfiguration.BaseStateEnum baseState)
        {
            switch (baseState)
            {
            case LayerConfiguration.BaseStateEnum.On:
                return(true);

            case LayerConfiguration.BaseStateEnum.Off:
                return(false);

            case LayerConfiguration.BaseStateEnum.Unchanged:
                return(null);

            default:
                throw new NotSupportedException();
            }
        }
 public static PdfName GetName(this LayerConfiguration.BaseStateEnum baseState)
 {
     return(codes[baseState]);
 }