         dismiss(animated: true)
     }
     
-    func windowCoordinatesRect(for references: [WMFReference]) -> CGRect {
+    // MARK: - Utilities
+    
+    private func windowCoordinatesRect(for references: [WMFReference]) -> CGRect {
         guard var rect = references.first?.rect else {
             return .zero
         }

        }
    }
    
    func showReferencesList() {
        guard let references = references else {
            showGenericError()
            return
        }
        let referencesVC = ReferencesViewController(articleURL: articleURL, references: references, theme: theme, delegate: self)
        presentEmbedded(referencesVC, style: .sheet)
    }
}

extension ArticleViewController: UIPageViewControllerDelegate {

        }
    }
    
    /// Show references that were tapped in the article as a popover
    func showReferencesPopover(with reference: WMFReference) {
        let width = min(min(view.frame.size.width, view.frame.size.height) - 20, 355);
        guard let popoverVC = WMFReferencePopoverMessageViewController.wmf_initialViewControllerFromClassStoryboard() else {
