            return
        }
        header.title = (group.midnightUTCDate as NSDate?)?.wmf_localizedRelativeDateFromMidnightUTCDate()
        header.apply(theme: theme)
    }
    
    func createNewCardVCFor(_ cell: ExploreCardCollectionViewCell) -> ExploreCardViewController {
        let cardVC = ExploreCardViewController()
        cardVC.delegate = self
        cardVC.dataStore = dataStore
        cardVC.view.autoresizingMask = []
        addChild(cardVC)
        cell.cardContent = cardVC
        cardVC.didMove(toParent: self)
        return cardVC