public override async Task <ApplicationUser <TKey> > FindByNameAsync(string normalizedUserName, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
ThrowIfDisposed();
if (string.IsNullOrEmpty(normalizedUserName))
{
throw new ArgumentException($"Parameter {nameof(normalizedUserName)} cannot be null or empty.");
}
return(await UsersTable.FindByUserNameAsync(normalizedUserName));
}