code: public static void init(ClassLoader loader)
    {
      for (; loader != null; loader = loader.getParent()) {
        if (loader instanceof EnvironmentClassLoader) {
          ((EnvironmentClassLoader) loader).init();
          return;
        }
      }
  
      for (int i = 0; i < _globalLoaderListeners.size(); i++) {
        EnvLoaderListener listener = _globalLoaderListeners.get(i);
  
        listener.classLoaderInit(null);
      }
    }
docs: Starts the current environment.