code: @Override
      public void visit(VerbatimNode node) {
          if ( options.isHighlightEnabled() && !options.isAutoHighlightEnabled() && node.getType().isEmpty() ) {
              VerbatimNode noHighlightNode = new VerbatimNode(node.getText(), "no-highlight");
              noHighlightNode.setStartIndex(node.getStartIndex());
              noHighlightNode.setEndIndex(node.getEndIndex());
              super.visit(noHighlightNode);
          }
          else {
              super.visit(node);
          }
      }
docs: Overrides the default implementation to set the language to "no-highlight" no
  language is specified. If highlighting is disabled or auto-highlighting is enabled,
  this method just calls the default implementation.
  
  @param node    The AST node.