public SignupsController(
IAmazonCognitoIdentityProvider identityProvider,
AWSCognitoClientOptions options,
CognitoClientSecret clientSecret)
{
_identityProvider = identityProvider ?? throw new ArgumentNullException(nameof(identityProvider));
_options = options ?? throw new ArgumentNullException(nameof(options));
_clientSecret = clientSecret ?? throw new ArgumentNullException(nameof(clientSecret));
}
