/**
  * @param template
  * @return
  */
 private static String getOperatorStorageName(OperatorTemplate template) {
   if (template != null) {
     PropertyReference propRef = template.getStoreOperatorTo();
     if (propRef != null) {
       if (propRef.getStrucfeature() != null) {
         return propRef.getStrucfeature().getName();
       } else {
         return propRef.getName();
       }
     }
   }
   return null;
 }