private IEnumerable<ValidationMessage> ValidateUser(User newUser)
        {
            IBusinessRulesValidator businessRuleValidator = new BusinessRulesValidator();
            businessRuleValidator.Add(UserModelValidator, newUser);
            businessRuleValidator.Add(PasswordPolicyRuleValidator, newUser);

            return businessRuleValidator.Validate();
        }
        /// <summary>
        /// Validates the specified password policy entity.
        /// </summary>
        /// <param name="passwordPolicy">The password policy.</param>
        private IEnumerable<ValidationMessage> ValidatePasswordPolicy(PasswordPolicy passwordPolicy)
        {
            IBusinessRulesValidator validator = new BusinessRulesValidator();
            validator.Add(PasswordPolicyValidator, passwordPolicy);

            return validator.Validate();
        }