anchor.diff:    /**
      * Sets the list of attributes of an element.
      */
  -  void _setCssAttributeMap(Element element, Map<String, String> attrs) {
  +  void setCssAttributeMap(Element element, Map<String, String> attrs) {
       List<String> arr = new List<String>();
   
       attrs.keys.forEach((String key) {
  
positive.code:   /**
     * Gets the list of attributes of an element.
     */
    Map<String, String> _getCssAttributeMap(Element element) {
      Map<String, String> ret = new Map<String, String>();
      String css = element.getAttribute('style');
  
  
negative.code:   List<Element> get elements;
  
    /**
     * Sets a CSS attribute.
     */
    void setCssAttribute(String name, String value) {
      elements.forEach((Element element) {
        Map<String, String> attrs = getCssAttributeMap(element);
  
        attrs[name] = value;
        setCssAttributeMap(element, attrs);
      });
    }
  
    /**
     * Gets a CSS attribute.
     */
    String getCssAttribute(String name) {
      String ret = '';
  
      if (elements.length > 0) {
        Map<String, String> attrs = getCssAttributeMap(elements[0]);
  
        name = name.toLowerCase();
        if (attrs.containsKey(name)) {
  