public async Task <User> SetEmail(string email)
{
if (string.IsNullOrWhiteSpace(email))
{
throw new ArgumentNullException(nameof(email));
}
try
{
new System.Net.Mail.MailAddress(email);
}
catch
{
throw new ArgumentException("Invalid email address.", nameof(email));
}
if (await _domainQuery.IsEmailInUse(email))
{
throw new EmailIsAlreadyInUseException(email);
}
Email = email;
return(this);
}
