public String getAction() {
        return this.action;
    }
<p>
The action that you want to apply to the device certificate. The only supported value is <code>DEACTIVATE</code>.
</p>

@return The action that you want to apply to the device certificate. The only supported value is
        <code>DEACTIVATE</code>.
@see DeviceCertificateUpdateAction
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/UpdateDeviceCertificateParams.java