/// <summary>
/// Gets an Actor by the email value held in the repository
/// </summary>
/// <param name="email">The full email address to look up</param>
/// <param name="cancellationToken"></param>
/// <returns>The Actor that matched the email address</returns>
/// <exception cref="ArgumentNullException"></exception>
public async Task <Actor> GetUserByEmailAsync(string email, CancellationToken cancellationToken = default(CancellationToken))
{
Actor actor;
if (!string.IsNullOrEmpty(email))
{
actor = await repository.GetActorByEmailAsync(email, cancellationToken);
}
else
{
throw new ArgumentNullException(nameof(email), "Email must be specified");
}
return(actor);
}