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@objc internal func scrollToBottom(_ animated: Bool = false) {

        let boundsHeight = collectionView?.bounds.size.height ?? 0

        let sizeHeight = collectionView?.contentSize.height ?? 0

        let offset = CGPoint(x: 0, y: max(sizeHeight - boundsHeight, 0))

        collectionView?.setContentOffset(offset, animated: animated)

        scrollToBottomButtonIsVisible = false

    }