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Another common way to write XML files is to use org.dom4j.Document|http://dom4j.sourceforge.net/dom4j-1.6.1/apidocs/org/dom4j/Document.html]. In the above example {{peerIdentitiesConfiguration is configured as a child of defaultConfigurationFile. The class itself extends org.sipfoundry.sipxconfig.admin.dialplan.config.XmlFile and it must override XmlFile.getDocument() method and return a dom4j document.
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