I've added a new FeatureLayer to my map in snapshot mode. However when I call: var fc:FeatureCollection = featurelayer.featureCollection, I always get null.
How do you get a featureCollection from a featureLayer?
The docs don't mention how to really use this, but based on the comments in this thread, it looks like you set FeatureCollection yourself to use with time-aware data.
It looks like you could basically load up any FeatureSet or LayerDetails into the FeatureCollection. I don't think you'd be limited to time-aware data.