code: def backup_key(self, name, mount_point=DEFAULT_MOUNT_POINT):
          
          api_path = '/v1/{mount_point}/backup/{name}'.format(
              mount_point=mount_point,
              name=name,
          )
          response = self._adapter.get(
              url=api_path,
          )
          return response.json()
docs: Return a plaintext backup of a named key.
  
          The backup contains all the configuration data and keys of all the versions along with the HMAC key. The
          response from this endpoint can be used with the /restore endpoint to restore the key.
  
          Supported methods:
              GET: /{mount_point}/backup/{name}. Produces: 200 application/json
  
          :param name: Name of the key.
          :type name: str | unicode
          :param mount_point: The "path" the method/backend was mounted on.
          :type mount_point: str | unicode
          :return: The JSON response of the request.
          :rtype: requests.Response