public String getUsername() {
        return this.username;
    }
<p>
The username of the user that you want to sign up. The value of this parameter is typically a username, but can
be any alias attribute in your user pool.
</p>

@return The username of the user that you want to sign up. The value of this parameter is typically a username,
        but can be any alias attribute in your user pool.
aws-java-sdk-cognitoidp/src/main/java/com/amazonaws/services/cognitoidp/model/SignUpRequest.java