What event fires when layers/layer get fully loaded on map?

[TonyLu]

I want to calculate the number of features in feature layer in current extent at the time everything is loaded.
Is there a event I can capture?

I tried following events, all of them get fired BEFORE layer graphics of current extent get loaded. That results in incorrect number of features.

Map:
onLayersAddResult
onZoomEnd
onPanEnd

Layer:
update-end

Thanks,
Tony