code: def link(self, selector):
          
          element = self.client.create_element('browser.link', (selector,))
          return DOMNode(element, self)
docs: Finds and returns a link ``<a>`` element (:class:`zombie.dom.DOMNode`).
          You can use a CSS selector or find a link by its text contents (case
          sensitive, but ignores leading/trailing spaces).
  
          :param selector: an optional string CSS selector
                          (http://zombie.labnotes.org/selectors) or inner text