get
Get an In-App Message's visual contents.
Note that: This method is only for In-App messages that come from the MEP (Mobile Engagement Platform) and will return null for messages coming from the CEP (Customer Engagement Platform).
Since an In-App message's contents can change a lot between formats, you will need to cast this to one of the classes implementing BatchInAppMessage.Content, such as BatchAlertContent, BatchInterstitialContent, BatchBannerContent, BatchImageContent or BatchWebViewContent More types might be added in the future, so don't make any assumptions on the instance returned.
Return
The In-App message's visual contents. Can be null if an error occurred or if not applicable.