public override void Invoke(AWSCredentials creds, RegionEndpoint region, int maxItems)
        {
            AmazonLambdaConfig config = new AmazonLambdaConfig();

            config.RegionEndpoint = region;
            ConfigureClient(config);
            AmazonLambdaClient client = new AmazonLambdaClient(creds, config);

            ListLayersResponse resp = new ListLayersResponse();

            do
            {
                ListLayersRequest req = new ListLayersRequest
                {
                    Marker = resp.NextMarker
                    ,
                    MaxItems = maxItems
                };

                resp = client.ListLayers(req);
                CheckError(resp.HttpStatusCode, "200");

                foreach (var obj in resp.Layers)
                {
                    AddObject(obj);
                }
            }while (!string.IsNullOrEmpty(resp.NextMarker));
        }