code: public void setOpenTimer(CmsTreeItem item) {
  
          if (item.isOpen()) {
              return;
          }
          if (m_openTimer != null) {
              if (m_openTimer.checkTimer(item)) {
                  return;
              }
              m_openTimer.cancel();
          }
          m_openTimer = new OpenTimer(item);
          m_openTimer.schedule(100);
      }
docs: Sets a timer to set a tree item open.<p>
  
  @param item the item to open