what exactly is Caching.ready, and when would it be false?

What does this property actually check, and under what circumstances would it be false? Sample code suggests using it [http://docs.unity3d.com/Manual/DownloadingAssetBundles.html][1] but the documentation for this property is lacking: [http://docs.unity3d.com/ScriptReference/Caching-ready.html][2] > **Description:** > Is caching ready? [1]: http://docs.unity3d.com/Manual/DownloadingAssetBundles.html [2]: http://docs.unity3d.com/ScriptReference/Caching-ready.html