//---------------------------------------------------------------------------------------------------------------------

        public virtual System.Collections.Specialized.NameValueCollection GetOpenSearchParameters(string mimeType)
        {
            if (mimeType != "application/atom+xml")
            {
                return(null);
            }
            var parameters = OpenSearchFactory.MergeOpenSearchParameters(GetOpenSearchableArray(), mimeType);

            parameters.Set("grouped", "{t2:grouped?}");
            return(parameters);
        }