code: private void initClasses() {
  
          if (!initializedClasses) {
              I_CmsClassInitializer initializer = GWT.create(I_CmsClassInitializer.class);
              initializer.initClasses();
              initializedClasses = true;
          }
      }
docs: Helper method for initializing the classes implementing {@link I_CmsHasInit}.<p>
  
  Calling this method more than once will have no effect.<p>