def METHOD_NAME(self):
    """
    Sends the request to list all keys.
    :return: a list containing the names of all keys.
    """
    path = self.META_BASEURL + '/'
    url = build_url(choice(self.list_hosts), path=path)
    r = self._send_request(url)
    if r.status_code == codes.ok:
        keys = loads(r.text)
        return keys
    else:
        exc_cls, exc_msg = self._get_exception(headers=r.headers, status_code=r.status_code, data=r.content)
        raise exc_cls(exc_msg)