Array of Card descendents (ClassicCard, CaptionedImage,
										Banner). Can be passed directly to display.showFeed.
When this collection of cards was received from Braze servers. If null, it means the feed has never been fetched for this user.
Array of Card descendents (ClassicCard, CaptionedImage, Banner).
						Can be passed directly to display.showFeed.
When this collection of cards was received from Appboy servers. If null, it means the content cards are still being fetched for this user.
Get the current unread card count. This is useful for powering badges on your control for showing the news feed.
									Note that Braze will not refresh news feed cards on new page loads (and so this function will return 0) until you
									call display.showFeed or appboy.requestFeedRefresh. ControlCard cards do not count towards the
								unread count.
A collection of
Carddescendents (ClassicCard,CaptionedImage,Banner). Subscribe to receive feed updates viaappboy.subscribeToFeedUpdates, or get the currently cached feed withappboy.getCachedFeed.