code: private CmsUploadListener createListener() {
  
          CmsUploadListener listener = new CmsUploadListener(getRequest().getContentLength());
          listener.setDelay(m_uploadDelay);
          m_listeners.put(listener.getId(), listener);
          getRequest().getSession().setAttribute(SESSION_ATTRIBUTE_LISTENER_ID, listener.getId());
          return listener;
      }
docs: Creates a upload listener and puts it into the static map.<p>
  
  @return the listener