Problem:
Whenever you publish a service to ArcGIS Online or ArcGIS Server, the layer gets cached and there's no easy way to update it. Cases where we may want to refresh include:
1. I published the service with an additional layer
2. I published the service with some different symbology
Solution:
Add an option in AGO layers to "refresh" the layer. Make it useful so that users can easily add additional layers from the service or refresh symbology, or refresh labeling.
