code: public static synchronized MultiUserChatLightManager getInstanceFor(XMPPConnection connection) {
          MultiUserChatLightManager multiUserChatLightManager = INSTANCES.get(connection);
          if (multiUserChatLightManager == null) {
              multiUserChatLightManager = new MultiUserChatLightManager(connection);
              INSTANCES.put(connection, multiUserChatLightManager);
          }
          return multiUserChatLightManager;
      }
docs: Get a instance of a MUC Light manager for the given connection.
  
  @param connection
  @return a MUCLight manager.