code: void openExplorerForParent(String rootPath, String uuid) {
  
          String parentPath = CmsResource.getParentFolder(rootPath);
  
          if (!rootPath.startsWith(m_cms.getRequestContext().getSiteRoot())) {
              m_cms.getRequestContext().setSiteRoot("");
          }
  
          CmsAppWorkplaceUi.get().getNavigator().navigateTo(
              CmsFileExplorerConfiguration.APP_ID
                  + "/"
                  + m_cms.getRequestContext().getCurrentProject().getUuid()
                  + "!!"
                  + m_cms.getRequestContext().getSiteRoot()
                  + "!!"
                  + parentPath.substring(m_cms.getRequestContext().getSiteRoot().length())
                  + "!!"
                  + uuid
                  + "!!");
      }
docs: Opens the explorer for given path and selected resource.<p>
  
  @param rootPath to be opened
  @param uuid to be selected