public async Task <Unit> Handle(RegisterNewUserCommand request, CancellationToken cancellationToken)
{
if (!CanRegisterUser())
{
throw new NotImplementedException();
}
var password = PasswordManager.HashPassword(request.Password);
var user = UserAccount.Create(
request.Login,
password,
request.Email,
request.FirstName,
request.LastName);
await _userRepository.AddAsync(user);
return(default);
