* @param officeMimetypeValue the <code>String</code> value of <code>OfficeMimetypeAttribute</code>, see {@odf.attribute office:mimetype} at specification
* @param officeVersionValue the <code>String</code> value of <code>OfficeVersionAttribute</code>, see {@odf.attribute office:version} at specification
* @return the element {@odf.element office:document}
*/
public OfficeDocumentElement newOfficeDocumentElement(String officeMimetypeValue, String officeVersionValue) {
OfficeDocumentElement officeDocument = ((OdfFileDom) this.ownerDocument).newOdfElement(OfficeDocumentElement.class);
officeDocument.setOfficeMimetypeAttribute(officeMimetypeValue);
officeDocument.setOfficeVersionAttribute(officeVersionValue);
this.appendChild(officeDocument);
return officeDocument;
}