AssetBundle に含まれるアセット名
"Assets/MyPrefab.prefab" のように、アセットパスはプロジェクトフォルダーからの相対パスを使用してください。
An AssetBundle can contain either Scene files or Asset files, but not a mix of the two.
This same path is used to retrieve assets from a loaded AssetBundle, for example with AssetBundle.LoadAsset, unless an alternative name has been specified in AssetBundleBuild.addressableNames.