* @param context An object that knows how to resolve FO Tree context
* issues.
* @return The play-during property.
*/
public String traitPlayDuring(final FObj fobj, final FoContext context) {
final PdPlayDuring property = (PdPlayDuring) getProperty(
FoProperty.PLAY_DURING);
if (property != null) {
return property.getValue(context, fobj);
}
return PdPlayDuring.getValueNoInstance();
}