@class CKMediaObject, IMMessage, NSString; @interface CKPinnedConversationMediaObjectActivityItem : NSObject <CKPinnedConversationActivityItem> @property (readonly, nonatomic) IMMessage *message; @property (readonly, nonatomic) CKMediaObject *mediaObject; @property (readonly, nonatomic) NSString *attachedContactItemIdentifier; @property (readonly, nonatomic) NSString *activityItemIdentifier; @property (readonly, nonatomic) BOOL activityItemAppearsWithAnimation; @property (readonly, nonatomic) BOOL activityItemDisappearsWithAnimation; @property (readonly, nonatomic) double activityItemContentScale; @property (readonly) unsigned long long hash; @property (readonly) Class superclass; @property (readonly, copy) NSString *description; @property (readonly, copy) NSString *debugDescription; + (BOOL)_mediaTypeSupportedForPinningPreview:(int)a0; + (id)previewImageForMediaObject:(id)a0; + (id)previewableMediaObjectFromMessage:(id)a0; - (void).cxx_destruct; - (id)activityItemView; - (id)initWithMessage:(id)a0 mediaObject:(id)a1 contentScale:(double)a2 attachedContactItemIdentifier:(id)a3; @end