protected virtual string BuildAccessUrl(FileSystemFileProviderConfiguration configuration, string fileId)
        {
            var accessUrl = $"{configuration.HttpServer.EnsureEndsWith('/')}/{fileId}";

            return(accessUrl);
        }
        protected virtual string BuildAccessUrl(FileSystemFileProviderConfiguration configuration, string relativePath)
        {
            var accessUrl = $"{configuration.HttpServer.EnsureEndsWith('/')}{relativePath.TrimStart('/')}";

            return(accessUrl);
        }