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);
        }