/**
  * Receives the value of the ODFDOM attribute representation <code>NumberFormatSourceAttribute
  * </code> , See {@odf.attribute number:format-source}
  *
  * @return - the <code>String</code> , the value or <code>null</code>, if the attribute is not set
  *     and no default value defined.
  */
 public String getNumberFormatSourceAttribute() {
   NumberFormatSourceAttribute attr =
       (NumberFormatSourceAttribute) getOdfAttribute(OdfDocumentNamespace.NUMBER, "format-source");
   if (attr != null) {
     return String.valueOf(attr.getValue());
   }
   return NumberFormatSourceAttribute.DEFAULT_VALUE;
 }
 /**
  * Sets the value of ODFDOM attribute representation <code>NumberFormatSourceAttribute</code> ,
  * See {@odf.attribute number:format-source}
  *
  * @param numberFormatSourceValue The type is <code>String</code>
  */
 public void setNumberFormatSourceAttribute(String numberFormatSourceValue) {
   NumberFormatSourceAttribute attr =
       new NumberFormatSourceAttribute((OdfFileDom) this.ownerDocument);
   setOdfAttribute(attr);
   attr.setValue(numberFormatSourceValue);
 }