| CachePolicyDelegate | Delegate used to determine the caching for a InAppMessage. |
| PrepareAssetsDelegate | Listener used by AssetManager to populate assets for in-app messages. |
| AirshipPrepareAssetsDelegate | Default PrepareAssetsDelegate for Airship message types. |
| AssetManager | Manages assets for in-app messages. |
| Assets | Assets for an in-app message. |