in src/Amazon.AspNetCore.Identity.Cognito/CognitoUserManager.cs [577:586]
public virtual Task<IdentityResult> ResendSignupConfirmationCodeAsync(TUser user)
{
ThrowIfDisposed();
if (user == null)
{
throw new ArgumentNullException(nameof(user));
}
return _userStore.ResendSignupConfirmationCodeAsync(user, CancellationToken);
}