public List <Medicine> GetMedicines(bool withPrescription)
        {
            Console.WriteLine("Dostępne leki:");
            var allMedicines = medicineRepository.LoadAllFromDB();
            var result       = new List <Medicine>();

            foreach (Medicine medicine in allMedicines)
            {
                if (medicine.WithPrescription == withPrescription)
                {
                    result.Add(medicine);
                    Console.WriteLine("\t" + medicine.ToString());
                }
            }
            Console.WriteLine("Koniec listy leków  ============================================");
            return(result);
        }