code: def export_jwks(self, private=False, issuer=""):
          
          keys = []
          for kb in self.issuer_keys[issuer]:
              keys.extend([k.serialize(private) for k in kb.keys() if
                           k.inactive_since == 0])
          return {"keys": keys}
docs: Produces a dictionary that later can be easily mapped into a 
          JSON string representing a JWKS.
          
          :param private: Whether it should be the private keys or the public
          :param issuer: The entity ID.
          :return: A dictionary with one key: 'keys'