old_contents: import webbrowser
  
  class DriverAPI(object):
      @property
      def title(self):
          raise NotImplementedError
  
      @property
      def html(self):
          raise NotImplementedError
  
      @property
      def url(self):
          raise NotImplementedError
          
      def visit(self, url):
          raise NotImplementedError
  
      def execute_script(self, script):
          raise NotImplementedError
          
      def evaluate_script(self, script):
          raise NotImplementedError
  
      def open_in_browser(self, path):
          webbrowser.open(path)
           
      def find_by_css_selector(self, css_selector):
          raise NotImplementedError
          
      def find_by_xpath(self, xpath):
          raise NotImplementedError
  
      def find_by_name(self, name):
          raise NotImplementedError
  
      def find_by_id(self, id):
          raise NotImplementedError
  
      def find_by_tag(self, tag):
          raise NotImplementedError
  
      def find_link_by_href(self, href):
          raise NotImplementedError
  
      def find_link_by_text(self, text):
          raise NotImplementedError
  
      def fill_in(self, name, value):
          raise NotImplementedError
          
      attach_file = fill_in
  
      def choose(self, name):
          raise NotImplementedError
      
      def check(self, name):
          raise NotImplementedError
  
      def uncheck(self, name):
          raise NotImplementedError
  
      def quit(self):
          raise NotImplementedError
  
  
  class ElementAPI(object):
  
      def _get_value(self):
          raise NotImplementedError
  
      def _set_value(self, value):
          raise NotImplementedError
  
      value = property(_get_value, _set_value)
  
      def click(self):
          raise NotImplementedError
          
      def check(self):
          raise NotImplementedError
          
      def uncheck(self):
          raise NotImplementedError
  
      @property
      def checked(self):
          raise NotImplementedError
          
      @property
      def visible(self):
          raise NotImplementedError
  
      def __getitem__(self, attribute):
          raise NotImplementedError
  
new_contents: class DriverAPI(object):
      @property
      def title(self):
          raise NotImplementedError
  
      @property
      def html(self):
          raise NotImplementedError
  
      @property
      def url(self):
          raise NotImplementedError
          
      def visit(self, url):
          raise NotImplementedError
  
      def execute_script(self, script):
          raise NotImplementedError
          
      def evaluate_script(self, script):
          raise NotImplementedError
  
      def find_by_css_selector(self, css_selector):
          raise NotImplementedError
          
      def find_by_xpath(self, xpath):
          raise NotImplementedError
  
      def find_by_name(self, name):
          raise NotImplementedError
  
      def find_by_id(self, id):
          raise NotImplementedError
  
      def find_by_tag(self, tag):
          raise NotImplementedError
  
      def find_link_by_href(self, href):
          raise NotImplementedError
  
      def find_link_by_text(self, text):
          raise NotImplementedError
  
      def fill_in(self, name, value):
          raise NotImplementedError
          
      attach_file = fill_in
  
      def choose(self, name):
          raise NotImplementedError
      
      def check(self, name):
          raise NotImplementedError
  
      def uncheck(self, name):
          raise NotImplementedError
  
      def quit(self):
          raise NotImplementedError
  
  
  class ElementAPI(object):
  
      def _get_value(self):
          raise NotImplementedError
  
      def _set_value(self, value):
          raise NotImplementedError
  
      value = property(_get_value, _set_value)
  
      def click(self):
          raise NotImplementedError
          
      def check(self):
          raise NotImplementedError
          
      def uncheck(self):
          raise NotImplementedError
  
      @property
      def checked(self):
          raise NotImplementedError
          
      @property
      def visible(self):
          raise NotImplementedError
  
      def __getitem__(self, attribute):
          raise NotImplementedError
  
subject: remove open_in_browser method