/// <summary>
/// Download collection of recently uploaded photos.
/// </summary>
/// <param name="perPage">How many photos should one page contain.</param>
/// <param name="pageNumber">Page number.</param>
internal void GetRecentPhotos(int perPage, int pageNumber)
{
service.GetRecent(HttpConstants.Recent, perPage, pageNumber, HttpConstants.QueryOptions)
.SubscribeOn(Scheduler.ThreadPool)
.ObserveOn(Scheduler.MainThread)
.Subscribe(
data => callback.OnSuccess(data),
error => callback.OnFailure(error)
);
}