I'm using ArcGIS JS API 4.10
There is the function I'm using by:
function spatialQuerySublayer(sublayer, extent) {
let spatialQuery = sublayer.createQuery()
spatialQuery.geometry = extent
spatialQuery.spatialRelationship = 'intersects'
spatialQuery.outFields = ['OBJECTID']
return layer.queryFeatures(spatialQuery)
}
It is a spatial request of a sublayer against another sublayer, but I don't know how to take the extent of the sublayer which I do request againts