Popup Paging for GraphicsLayer

Discussion created by jay.gregory on Jan 8, 2014
I have created a custom GraphicsLayer (based on a query to an external web service that isn't ArcGIS based).  I would like to implement paging for popups for the GraphicsLayer. 
When using map-service based FeatureLayers, I would generally add the feature layer in SELECTIONMODE and also add a DynamicMapServiceLayer from the map service URL.  A spatial query based on mouse clicks can return the features, which I load into the popup for paging.  However, I don't know how to perform this same type spatial query on the GraphicsLayer.  Can anyone provide any assistance?