ArcGIS Server findNearest endpoint with multiple features in Analysis Layer.

[JamesMadden1]

I'm working on identifying the nearest feature to a set of lat/lng values.  I'm using ArcGIS Server's findNearest endpoint (server/rest/services/System/SpatialAnalysisTools/GPServer/FindNearest).  The service is setup so that I have to supply a value for the nearLayer and analysisLayer.  The nearLayer contains the service url I am trying to locate features in.  The analysisLayer has all the lat/lng values I am using to query the nearLayer.  My analysisLayer is setup like what is shown below.  I am sending multiple lat/lng in a single request.  The service returns a list of near features but I'm not sure how to join to the features from the analysisLayer.  The response I get includes all the fields from the nearLayer and also an OID field.  Is there a way I can put a key field in the analysisLayer and have that returned in the response?

Analysis Layer

{"layerDefinition": null, "featureSet": {"geometryType":"esriGeometryPoint","spatialReference":{"wkid":4326,"latestWkid":4326},"features":[{"geometry":{"x":-94.59117567799996,"y":38.134641259000034,"spatialReference":{"wkid":4326,"latestWkid":4326}}},{"geometry":{"x":-92.59117567799996,"y":38.134641259000034,"spatialReference":{"wkid":4326,"latestWkid":4326}}}]}} 

[JamesMadden1 · Accepted solution]

I was able to get fields from the analysis layer returned in the connectingLinesLayer results.  I was referencing the nearestLayer endpoint which only gives back the near features.  The analysis layer was updated to include a layerDefinition for the input geometries (see below).  

{"layerDefinition": {"geometryType": "esriGeometryPoint","fields": [{"name": "ID","type": "esriFieldTypeOID","alias": "ID"}]}, "featureSet": {"geometryType":"esriGeometryPoint","spatialReference":{"wkid":4326,"latestWkid":4326},"features":[{“attributes”:{“ID”:1}, "geometry":{"x":-94.59117567799996,"y":38.134641259000034,"spatialReference":{"wkid":4326,"latestWkid":4326}},}]}}