ServiceStack.WebRequestUtils.GetErrorResponseDtoType C# (CSharp) Метод

        public static Type GetErrorResponseDtoType(object request)
        {
            if (request == null)
                return typeof(ErrorResponse);

            //If a conventionally-named Response type exists use that regardless if it has ResponseStatus or not
            var responseDtoType = AssemblyUtils.FindType(GetResponseDtoName(request));
            if (responseDtoType == null)
            {
                var genericDef = request.GetType().GetTypeWithGenericTypeDefinitionOf(typeof(IReturn<>));
                if (genericDef != null)
                {

                    var returnDtoType = genericDef.GenericTypeArguments()[0];
                    var hasResponseStatus = returnDtoType is IHasResponseStatus
                        || returnDtoType.GetPropertyInfo("ResponseStatus") != null;

                    //Only use the specified Return type if it has a ResponseStatus property
                    if (hasResponseStatus)
                    {
                        responseDtoType = returnDtoType;
                    }
                }
            }

            return responseDtoType ?? typeof(ErrorResponse);
        }
    }

        /// <summary>
        /// Create an instance of the service response dto type and inject it with the supplied responseStatus
        /// </summary>
        /// <param name="request"></param>
        /// <param name="responseStatus"></param>
        /// <returns></returns>
        public static object CreateResponseDto(object request, ResponseStatus responseStatus)
        {
            // Predict the Response message type name
            var responseDtoType = WebRequestUtils.GetErrorResponseDtoType(request);
            var responseDto     = responseDtoType.CreateInstance();

            if (responseDto == null)
            {
                return(null);
            }

            // For faster serialization of exceptions, services should implement IHasResponseStatus
            var hasResponseStatus = responseDto as IHasResponseStatus;

            if (hasResponseStatus != null)
            {
                hasResponseStatus.ResponseStatus = responseStatus;
            }
            else
            {
                var responseStatusProperty = responseDtoType.GetProperty(ResponseStatusPropertyName);
                if (responseStatusProperty != null)
                {
                    // Set the ResponseStatus
                    responseStatusProperty.SetProperty(responseDto, responseStatus);
                }
            }

            // Return an Error DTO with the exception populated
            return(responseDto);
        }