public async Task <double> GetAverageSalaryByNationality(string nationality) => await _employeeDomainService.GetAverageSalary(new NationalityEmployeeSpecification(nationality));
public async Task <double> GetAverageSalaryByNationality(string nationality) => await _employeeDomainService.GetAverageSalary(new NationalityEmployeeSpecification(nationality));