code: public static void addModelMap(String apiGroupVersion, String kind, Class<?> clazz) {
      classes.put(apiGroupVersion + "/" + kind, clazz);
    }
docs: Add a mapping from API Group/version/kind to a Class to use when calling <code>load(...)</code>
  .
  
  <p>Shouldn't really be needed as most API Group/Version/Kind are loaded dynamically at startup.