code: public boolean containsPropertySet(Class<? extends Annotation> propertySet)
      {
          //
          // Defer to any delegate map
          //
          if (_delegateMap != null)
              return _delegateMap.containsPropertySet(propertySet);
  
          return false;
      }
docs: Returns true if the PropertyMap contains one or more values for the specified
  PropertySet, false otherwise.