In the old ESRI sdk, I could create an AGSFeatureSet by importing a json file.
The json file looked like this:
{"geometryType":"esriGeometryPolygon","features":[{"geometry":{"spatialReference":{"wkid":102100},"rings":[[[-9239517.7358417064,2731827.6590396804],.......
Is this still possible with the new runtime SDK?