* @param officeDdeItemValue the <code>String</code> value of <code>OfficeDdeItemAttribute</code>, see {@odf.attribute office:dde-item} at specification
* @param officeDdeTopicValue the <code>String</code> value of <code>OfficeDdeTopicAttribute</code>, see {@odf.attribute office:dde-topic} at specification
* @return the element {@odf.element office:dde-source}
*/
public OfficeDdeSourceElement newOfficeDdeSourceElement(String officeDdeApplicationValue, String officeDdeItemValue, String officeDdeTopicValue) {
OfficeDdeSourceElement officeDdeSource = ((OdfFileDom) this.ownerDocument).newOdfElement(OfficeDdeSourceElement.class);
officeDdeSource.setOfficeDdeApplicationAttribute(officeDdeApplicationValue);
officeDdeSource.setOfficeDdeItemAttribute(officeDdeItemValue);
officeDdeSource.setOfficeDdeTopicAttribute(officeDdeTopicValue);
this.appendChild(officeDdeSource);
return officeDdeSource;
}