/**
   * Perform the action of the plugin.
   *
   * @param document the current document.
   */
  public boolean perform(Document document) throws IOException {
    // Interact with the user to get the layer tag/

    Tag layerTag = getLayerTagFromUser(document);
    if (layerTag == null) return false; // User cancled.
    Tag endTag = new Tag(layerTag.getName(), false);
    // Get the output stream to hold the new document text.
    PrintWriter out = new PrintWriter(document.getOutput());
    // Create a lexical stream to tokenize the old document text.
    LexicalStream in = new LexicalStream(new SelectedHTMLReader(document.getInput(), out));
    for (; ; ) {
      // Get the next token of the document.
      Token token = in.next();
      if (token == null) break; //  Null means we've finished the document.
      else if (token instanceof Comment) {
        Comment comment = (Comment) token;
        if (comment.isSelectionStart()) {
          out.print(layerTag);
        } else if (comment.isSelectionEnd()) {
          out.print(comment);
          out.print(endTag);
          continue; // So comment isn't printed twice.
        }
      }
      out.print(token);
    }
    out.close();
    return true;
  }
  private static Binding _createBinding(@NotNull Accessor accessor) {
    Binding binding = XmlSerializerImpl.getTypeBinding(accessor.getGenericType(), accessor);
    if (binding instanceof JDOMElementBinding) {
      return binding;
    }

    Attribute attribute = accessor.getAnnotation(Attribute.class);
    if (attribute != null) {
      return new AttributeBinding(accessor, attribute);
    }

    Tag tag = accessor.getAnnotation(Tag.class);
    if (tag != null && !tag.value().isEmpty()) {
      return new TagBinding(accessor, tag);
    }

    Text text = accessor.getAnnotation(Text.class);
    if (text != null) {
      return new TextBinding(accessor);
    }

    boolean surroundWithTag = true;
    Property property = accessor.getAnnotation(Property.class);
    if (property != null) {
      surroundWithTag = property.surroundWithTag();
    }

    if (!surroundWithTag) {
      if (!Element.class.isAssignableFrom(binding.getBoundNodeType())) {
        throw new XmlSerializationException(
            "Text-serializable properties can't be serialized without surrounding tags: "
                + accessor);
      }
      return new AccessorBindingWrapper(accessor, binding);
    }

    return new OptionTagBinding(accessor, accessor.getAnnotation(OptionTag.class));
  }
 private static String getTagNameFromAnnotation(Class<?> aClass) {
   Tag tag = aClass.getAnnotation(Tag.class);
   if (tag != null && !tag.value().isEmpty()) return tag.value();
   return null;
 }