public IEnumerable <Resource> Convert(Item source, IEnumerable <Resource> destination, ResolutionContext context)
        {
            var resources = new List <Resource>();

            var attachments = context.GetAttachments();
            var siteUrl     = context.GetSiteUrl();

            resources.AddRange(GetBannerResources(source, siteUrl, attachments));
            resources.AddRange(GetImageGalleryResources(source, siteUrl, attachments));

            //other image resources (inline images) are added by the ImageReplacer-class (because it's easier to parse Markdown than HTML)

            return(resources.ToArray());
        }