* Receives the value of the ODFDOM attribute representation <code>ChartVerticalAttribute</code> , See {@odf.attribute chart:vertical}
*
* @return - the <code>Boolean</code> , the value or <code>null</code>, if the attribute is not set and no default value defined.
*/
public Boolean getChartVerticalAttribute() {
ChartVerticalAttribute attr = (ChartVerticalAttribute) getOdfAttribute(OdfDocumentNamespace.CHART, "vertical");
if (attr != null) {
return Boolean.valueOf(attr.booleanValue());
}
return null;
}