public async Task <IActionResult> Get(string query)
{
HttpClientAdaptor client = new HttpClientAdaptor(_clientFactory);
var googleImages = Google.getGoogleResults(query, client);
var ecosiaImages = Ecosia.getEcosiaResults(query, client);
var bingImages = Bing.getBingResults(query, client);
var yahooImages = Yahoo.getYahooResults(query, client);
Task.WaitAll(new Task <List <string> >[] { googleImages, ecosiaImages, bingImages, yahooImages });
return(Ok(googleImages.Result.Concat(ecosiaImages.Result).Concat(bingImages.Result).Concat(yahooImages.Result).ToList()));
}