@protocol MessageListItemHelperDelegate; @interface MessageListItemHelper : NSObject @property (weak, nonatomic) id<MessageListItemHelperDelegate> delegate; - (void).cxx_destruct; - (id)initWithDelegate:(id)a0; - (BOOL)_isItemAfterItemIDSelected:(id)a0 snapshot:(id)a1; - (BOOL)_isItemBeforeItemIDSelected:(id)a0 snapshot:(id)a1; - (BOOL)_isItemIDSelected:(id)a0; - (BOOL)_isNextItemLastExpandedItemID:(id)a0 snapshot:(id)a1; - (long long)cellGroupingForItemID:(id)a0 snapshot:(id)a1 isThreaded:(BOOL)a2; - (id)itemIDAfterItemID:(id)a0 snapshot:(id)a1; - (id)itemIDBeforeItemID:(id)a0 snapshot:(id)a1; @end