get dependency information when AssetBundle.Load

hi all developer,

we develop game and build User interface by Ngui, all Ngui resource separated by Font、Atlas、Scene with BuildPipeline.Pop(push)AssetDependencies, and download ngui assetbundle befor Game start, such as list:

Ngui ReSource : (1) Dynamic font (2) All Atlas, such as Loading Atlas、Backage Atlas...etc. (3) All UI scene prefab, such as Panel_Loading、Panel_Backage...etc.

when called AssetBundle.Load of Panel_Loading and got Panel_Loading prefab and dependency atlas, how could I got dependency information about Panel_Loading AssetBundle, bacause when Panel_loading Destroy, need release dependency Atlas.

EditorUtility.CollectDependencies