public java.util.List<AttributeType> getValidationData() {
        return validationData;
    }
<p>
Temporary user attributes that contribute to the outcomes of your pre sign-up Lambda trigger. This set of
key-value pairs are for custom validation of information that you collect from your users but don't need to
retain.
</p>
<p>
Your Lambda function can analyze this additional data and act on it. Your function might perform external API
operations like logging user attributes and validation data to Amazon CloudWatch Logs. Validation data might also
affect the response that your function returns to Amazon Cognito, like automatically confirming the user if they
sign up from within your network.
</p>
<p>
For more information about the pre sign-up Lambda trigger, see <a
href="https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-sign-up.html">Pre sign-up
Lambda trigger</a>.
</p>

@return Temporary user attributes that contribute to the outcomes of your pre sign-up Lambda trigger. This set of
        key-value pairs are for custom validation of information that you collect from your users but don't need
        to retain.</p>
        <p>
        Your Lambda function can analyze this additional data and act on it. Your function might perform external
        API operations like logging user attributes and validation data to Amazon CloudWatch Logs. Validation
        data might also affect the response that your function returns to Amazon Cognito, like automatically
        confirming the user if they sign up from within your network.
        </p>
        <p>
        For more information about the pre sign-up Lambda trigger, see <a
        href="https://docs.aws.amazon.com/cognito/latest/developerguide/user-pool-lambda-pre-sign-up.html">Pre
        sign-up Lambda trigger</a>.
aws-java-sdk-cognitoidp/src/main/java/com/amazonaws/services/cognitoidp/model/AdminCreateUserRequest.java