code: protected CmsObject getRootCmsObject() {
  
          if (m_rootCms == null) {
  
              m_rootCms = getOfflineCmsObject(A_CmsUI.getCmsObject());
              m_rootCms.getRequestContext().setSiteRoot("");
  
          }
          return m_rootCms;
      }
docs: Returns the root cms object.<p>
  
  @return the root cms object