}
case CANCELDELEGATIONTOKEN:
{
final Token<DelegationTokenIdentifier> token = new Token<DelegationTokenIdentifier>();
token.decodeFromUrlString(delegationTokenArgument.getValue());
namenode.cancelDelegationToken(token);
return Response.ok().type(MediaType.APPLICATION_OCTET_STREAM).build();
}
default:
throw new UnsupportedOperationException(op + " is not supported");
}