* Receives the value of the ODFDOM attribute representation <code>ChartDataLabelNumberAttribute</code> , See {@odf.attribute chart:data-label-number}
*
* @return - the <code>String</code> , the value or <code>null</code>, if the attribute is not set and no default value defined.
*/
public String getChartDataLabelNumberAttribute() {
ChartDataLabelNumberAttribute attr = (ChartDataLabelNumberAttribute) getOdfAttribute(OdfDocumentNamespace.CHART, "data-label-number");
if (attr != null) {
return String.valueOf(attr.getValue());
}
return null;
}