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    public class ServiceStackJsonResult : JsonResult
    {
        public override void ExecuteResult(ControllerContext context) {
            HttpResponseBase response = context.HttpContext.Response;
            response.ContentType = !String.IsNullOrEmpty(ContentType) ? ContentType : "application/json";

            if (ContentEncoding != null) {
                response.ContentEncoding = ContentEncoding;
            }

            if (Data != null) {
                response.Write(JsonSerializer.SerializeToString(Data));
            }
        }
    }