* Receives the value of the ODFDOM attribute representation <code>DrawImageOpacityAttribute</code> , See {@odf.attribute draw:image-opacity}
*
* @return - the <code>String</code> , the value or <code>null</code>, if the attribute is not set and no default value defined.
*/
public String getDrawImageOpacityAttribute() {
DrawImageOpacityAttribute attr = (DrawImageOpacityAttribute) getOdfAttribute(OdfDocumentNamespace.DRAW, "image-opacity");
if (attr != null) {
return String.valueOf(attr.getValue());
}
return null;
}