private static void AddAssetsToBuilder(GeneratedSite entity, JobBuilder builder)
        {
            if (!string.IsNullOrEmpty(entity.AssetPaths))
            {
                var splitPaths = entity.AssetPaths.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
                var rootPath   = HostingEnvironment.MapPath("~/");

                foreach (var path in splitPaths)
                {
                    var absolutePath = FileHelpers.PathCombine(rootPath, path);

                    if (path.Contains("?") || path.Contains("*"))
                    {
                        var trimmedPath = path.TrimStart(new[] { '\\', '/' });

                        var directory = new DirectoryInfo(rootPath);
                        var files     = directory.GetFiles(trimmedPath, SearchOption.AllDirectories);

                        builder.AddAssetFiles(files.Select(f => "/" + FileHelpers.GetRelativePath(rootPath, f.FullName)));
                    }
                    else if (Directory.Exists(absolutePath))
                    {
                        builder.AddAssetFolder(path);
                    }
                    else if (System.IO.File.Exists(absolutePath))
                    {
                        builder.AddAssetFile(path);
                    }
                    else
                    {
                        // Invalid file.
                    }
                }
            }
        }