code: protected function generateNodeGlobal($htmlContent, $language, $routePattern)
      {
          $nodeError404Block = new Block();
          $nodeError404Block->setLabel('Wysiwyg');
          $nodeError404Block->setLanguage($language);
          $nodeError404Block->setComponent(TinyMCEWysiwygStrategy::NAME);
          $nodeError404Block->setAttributes(array(
              "htmlContent" => $htmlContent
          ));
  
          $nodeError404Block = $this->generateBlock($nodeError404Block);
  
          $main = new Area();
          $main->addBlock($nodeError404Block);
  
          $nodeError404 = $this->createBaseNode();
          $nodeError404->setArea('main', $main);
  
          $nodeError404->setNodeType(NodeInterface::TYPE_ERROR);
          $nodeError404->setLanguage($language);
          $nodeError404->setNodeId(NodeInterface::ERROR_404_NODE_ID);
          $nodeError404->setName('404');
          $nodeError404->setVersionName($this->getVersionName($nodeError404));
          $nodeError404->setCreatedBy('fake_admin');
          $nodeError404->setParentId(NodeInterface::ROOT_PARENT_ID);
          $nodeError404->setRoutePattern($routePattern);
          $nodeError404->setInFooter(false);
          $nodeError404->setInMenu(false);
          $nodeError404->setOrder(-1);
  
          return $nodeError404;
      }
docs: @param string $htmlContent
  @param string $language
  @param string $routePattern
  
  @return Node