 class ImageUtilities: NSObject {
     
     // MARK: - Piwigo Server Methods
-    class func getInfos(forID imageId:Int, inCategoryId categoryId: Int,
+    static func getInfos(forID imageId:Int, inCategoryId categoryId: Int,
                         completion: @escaping (PiwigoImageData) -> Void,
                         failure: @escaping (NSError) -> Void) {
         // Prepare parameters for retrieving image/video infos

        }
    }

    class func addToFavorites(_ imageData: PiwigoImageData,
                      completion: @escaping () -> Void,
                      failure: @escaping (NSError) -> Void) {
        // Prepare parameters for retrieving image/video infos

    
    // MARK: - Image Downsampling
    // Downsampling large images for display at smaller size (WWDC 2018 - Session 219)
    static func downsample(imageAt imageURL: URL, to pointSize: CGSize, scale: CGFloat) -> UIImage {
        let imageSourceOptions = [kCGImageSourceShouldCache: false] as CFDictionary
        guard pointSize.equalTo(CGSize.zero) == false,
              let imageSource = CGImageSourceCreateWithURL(imageURL as CFURL, imageSourceOptions) else {
