code: protected void notifyModuleUpdate(@Nullable ScriptModule newModule, @Nullable ScriptModule oldModule) {
          for (ScriptModuleListener listener : listeners) {
              listener.moduleUpdated(newModule, oldModule);
          }
      }
docs: Convenience method to notify the listeners that there was an update to the script module
  @param newModule newly loaded module
  @param oldModule module that was displaced by the new module