Передача массива в качестве параметра - C#

var etc2 = articles.Select(a => new TopicInfo
                {
                    AuthorName = string.Empty,
                    AuthorUrl = new Uri(request.AuthorUrls[0]),
                    Content = a.Body,
                    PostId = a.OriginalId,
                    PublishTime = a.PublicationDate,
                    Title = a.Title,
                    Url = a.OriginalUrl
                });
            var test = new SearchContentResponse
                {
                    Items = new[] { etc2 } as TopicInfo[],
                    TotalCount = 666,
                };