/// <summary>
/// finds and returns user by normalizedUserName (normalizedUserName = Email.ToUpper())
/// </summary>
/// <param name="normalizedUserName"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task <AppUser> FindByNameAsync(string normalizedUserName, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
return(await _userGateway.FindByEmailAsync(normalizedUserName, cancellationToken));
}
