code: public static InjectorImpl current(ClassLoader loader)
    {
      if (loader instanceof DynamicClassLoader) {
        return _localManager.getLevel(loader);
      }
      else {
        SoftReference<InjectorImpl> injectRef = _loaderManagerMap.get(loader);
  
        if (injectRef != null) {
          return injectRef.get();
        }
        else {
          return null;
        }
      }
    }
docs: Returns the current inject manager.