public CACertificateDescription withCertificateArn(String certificateArn) {
        setCertificateArn(certificateArn);
        return this;
    }
<p>
The CA certificate ARN.
</p>

@param certificateArn
       The CA certificate ARN.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/CACertificateDescription.java