def call(file, *args, format: nil)
      img = ::MiniMagick::Image.new(file.path)
      img.quiet
      img.format(format.to_s.downcase, nil) if format
      send(@method, img, *args)
      post_processing(img)

      ::File.open(img.path, "rb")
    end
def call(file, *args, format: nil)
      img = ::MiniMagick::Image.new(file.path)
      img.quiet
      img.format(format.to_s.downcase, nil) if format
      send(@method, img, *args)
      post_processing(img)

      ::File.open(img.path, "rb")
    end
Overwrite refile call method to supress format warnings and do post-processing