protected XmlElement addConfigurationElement(XmlElement nodeElement) {
XmlElement configElement = super.addConfigurationElement(nodeElement);
// save start new instance
XmlElement element = configElement.addElement(GraphSchema.NS, NEW_TAG_NAME);
element.addChild(String.valueOf(this.startNewInstance));
if (this.startNewInstance) {
// save ami id
if (this.amiId != null) {
XmlElement element2 = configElement.addElement(GraphSchema.NS, AMI_ID_TAG_NAME);