The EsriFeatureRetriever class is an implementation of FeatureRetriever.
featureType.getDetails().then(details => { var retriever = new EsriFeatureRetriever(details, results.objectIdFieldName); });
The EsriFeatureRetriever class is an implementation of FeatureRetriever.
featureType.getDetails().then(details => {
var retriever = new EsriFeatureRetriever(details, results.objectIdFieldName);
});