code: def update(self, title, key):
          
          json = None
          if title and key:
              data = {'title': title, 'key': key}
              json = self._json(self._patch(self._api, data=dumps(data)), 200)
          if json:
              self._update_(json)
              return True
          return False
docs: Update this key.
  
          :param str title: (required), title of the key
          :param str key: (required), text of the key file
          :returns: bool