public PageViewModel <CountryShortViewModel> GetCollection(string tourType, int skip = 0, int take = int.MaxValue) { var countryFilter = new CountryFilter(skip, take) { TourType = string.IsNullOrWhiteSpace(tourType) ? (TourTypesEnum?)null : TourTypesConverter.ConvertFromString(tourType) }; var countriesPage = _countryManager.GetCountriesPage(countryFilter); var result = GetCountriesPageViewModel(countriesPage); return(result); }