public async Task <IEnumerable <UnsplashImage> > Handle(GetBackgroundsQuery request,
CancellationToken cancellationToken)
{
var backgrounds = _mediaStore.GetBackgrounds();
if (backgrounds != null)
{
return(backgrounds);
}
var newBackgrounds = (await _client.GetImagesAsync(cancellationToken)).ToList();
_mediaStore.SetBackgrounds(newBackgrounds);
return(newBackgrounds);
}