code: protected void initializeArtefacts(ArtefactHandler handler) {
          if (handler == null) {
              return;
          }
  
          ArtefactInfo info = getArtefactInfo(handler.getType());
          // Only init those that have data
          if (info != null) {
              //System.out.println("Initialising artefacts of kind " + handler.getType() + " with registered artefacts" + info.getGrailsClassesByName());
              handler.initialize(info);
          }
      }
docs: Re-initialize the artefacts of the specified type. This gives handlers a chance to update caches etc.
  
  @param handler The handler to register