code: public void addBehavior(String behaviorId, String behaviorClass)
      {
          Application application = getMyfacesApplicationInstance();
          if (application != null)
          {
              application.addBehavior(behaviorId, behaviorClass);
              return;
          }
          throw new UnsupportedOperationException();
      }
docs: @since 2.0
  
  FIXME: Notify EG, this should not be abstract and throw UnsupportedOperationException
  
  @param behaviorId
  @param behaviorClass