if (timestamp != null)
{
operations.add(new TimestampOperation(timestamp.getTtl()));
}
Username username = config.getUsername();
if (username != null && user != null && password != null)
{
NonceFactory factory = Util.loadFactory(NonceFactory.class, configuration.getNonceFactory(), DefaultNonceFactory.class);
operations.add(new SendUsernameOperation(user, password, username.isDigestPassword(), username.isUseNonce(), username.isUseCreated(), factory.getGenerator()));
}
Sign sign = config.getSign();
if (sign != null)
{