public FlickrController(
     ILogger <FlickrController> logger,
     ICorrelationIdSource correlationIdSource,
     IFlickrWrapperApp flickrWrapperApp
     )
 {
     _logger = logger;
     _correlationIdSource = correlationIdSource;
     _flickrWrapperApp    = flickrWrapperApp;
 }
 public FlickrWrapperApp(FlickrConfiguration configuration, ICorrelationIdSource correlationIdSource, HttpClient httpClient)
 {
     _configuration       = configuration;
     _correlationIdSource = correlationIdSource;
     _httpClient          = httpClient;
 }