public void AddAdministrator(Administrator administrator)
        {
            using (MD5 md5Hash = MD5.Create())
            {
                administrator.Password = GetMd5Hash(md5Hash, administrator.Password);
            }

            _administratorRepository.Add(administrator);
        }
        public void IsAnyAdministratorExist()
        {
            var administrators = _administratorRepository.GetQuery();

            if (!administrators.Any())
            {
                var administrator = new Administrator
                {
                    Login = "******",
                    Email = "*****@*****.**",
                    Password = "******",
                    CreatedOn = DateTime.Now
                };

                AddAdministrator(administrator);
                Save();
            }
        }