Read/write. The URL of the hyperlink. URL can be on http, https,
        mailto, or file scheme; others may work.

def address(self):
        """
        Read/write. The URL of the hyperlink. URL can be on http, https,
        mailto, or file scheme; others may work.
        """
        if self._hlinkClick is None:
            return None
        return self.part.target_ref(self._hlinkClick.rId)