public async Task<IGalleryItem> GetGalleryTopicItemAsync(string galleryItemId, string topicId)
{
if (string.IsNullOrWhiteSpace(galleryItemId))
throw new ArgumentNullException(nameof(galleryItemId));
if (string.IsNullOrWhiteSpace(topicId))
throw new ArgumentNullException(nameof(topicId));
var url = $"topics/{topicId.Replace(" ", "_")}/{galleryItemId}";
using (var request = RequestBuilder.CreateRequest(HttpMethod.Get, url))
{
var items = await SendRequestAsync<GalleryItem>(request).ConfigureAwait(false);
return items;
}
}