code: def link(self, link, title, text):
          
          if self.anonymous_references:
              underscore = '__'
          else:
              underscore = '_'
          if title:
              return self._raw_html(
                  '<a href="{link}" title="{title}">{text}</a>'.format(
                      link=link, title=title, text=text
                  )
              )
          if not self.parse_relative_links:
              return '\ `{text} <{target}>`{underscore}\ '.format(
                  target=link,
                  text=text,
                  underscore=underscore
              )
          else:
              url_info = urlparse(link)
              if url_info.scheme:
                  return '\ `{text} <{target}>`{underscore}\ '.format(
                      target=link,
                      text=text,
                      underscore=underscore
                  )
              else:
                  link_type = 'doc'
                  anchor = url_info.fragment
                  if url_info.fragment:
                      if url_info.path:
                          # Can't link to anchors via doc directive.
                          anchor = ''
                      else:
                          # Example: [text](#anchor)
                          link_type = 'ref'
                  doc_link = '{doc_name}{anchor}'.format(
                      # splittext approach works whether or not path is set. It
                      # will return an empty string if unset, which leads to
                      # anchor only ref.
                      doc_name=os.path.splitext(url_info.path)[0],
                      anchor=anchor
                  )
                  return '\ :{link_type}:`{text} <{doc_link}>`\ '.format(
                      link_type=link_type,
                      doc_link=doc_link,
                      text=text
                  )
docs: Rendering a given link with content and title.
  
          :param link: href link for ``<a>`` tag.
          :param title: title content for `title` attribute.
          :param text: text content for description.