An app link target that will be used as a target when the user accept the invite.
@property (nonatomic, copy) NSURL *appLinkURL;
This is a requirement.
A URL to a preview image that will be displayed with the app invite
@property (nonatomic, copy) NSURL *previewImageURL;
This is optional. If you don't include it a fallback image will be used.
Compares the receiver to another app invite content.
The other content