public CatalogOverviewResponse GetCatalogOverview()
{
CatalogOverviewRequestQuery query = new CatalogOverviewRequestQuery(Locale);
RestRequestEx request = new RestRequestEx(
$"Catalog/Catalog.asmx/Query", Method.GET);
List <Tuple <string, string> > q = query.GetQuery();
// Query contains duplicate keys, hence following add-method
q.ForEach(x => request.AddQueryParameter(x.Item1, x.Item2));
IRestResponse <CatalogOverviewResponse> response = _httpClient.Execute <CatalogOverviewResponse>(request);
return(response.Data);
}