Editor Script: Get all assets in all AssetBundles

I'm doing an editor script, where I want to iterate over all assets in all assetbundles. My approach so far has been: foreach( var assetBundleName in UnityEditor.AssetDatabase.GetAllAssetBundleNames() ) { //GetAllAssetFromAssetBundle( assetBundleName ) <- doesn't exists as far as I know } But I'm stuck on getting an assetbundle by it's name. Is that possible? Other approaches are also most welcome :-) It should be said, that I'm using the AssetBundleManager in "Simulation Mode"... that's the factor, that complicates getting the assetbundles...