code: def copy(self):
          
          kj = KeyJar()
          for issuer in self.owners():
              kj[issuer] = [kb.copy() for kb in self[issuer]]
  
          kj.verify_ssl = self.verify_ssl
          return kj
docs: Make deep copy of this key jar.
  
          :return: A :py:class:`oidcmsg.key_jar.KeyJar` instance