* @param context An object that knows how to resolve FO Tree context
* issues.
* @return The volume property.
*/
public double traitVolume(final FObj fobj, final FoContext context) {
final PdVolume property = (PdVolume) getProperty(FoProperty.VOLUME);
if (property != null) {
return property.getValue(context, fobj);
}
return PdVolume.getValueNoInstance(context, fobj);
}