* Attribute is mandatory.
*
* @return - the <code>String</code> , the value or <code>null</code>, if the attribute is not set and no default value defined.
*/
public String getSvgViewBoxAttribute() {
SvgViewBoxAttribute attr = (SvgViewBoxAttribute) getOdfAttribute(OdfDocumentNamespace.SVG, "viewBox");
if (attr != null) {
return String.valueOf(attr.getValue());
}
return null;
}