@Override
	protected Pda<ISerState, RuleCall> createPDA(ParserRule rule) {
		SerializerParserRuleCfg cfg = new SerializerParserRuleCfg(rule);
		SerializerParserRuleFollowerFunction ff = new SerializerParserRuleFollowerFunction(cfg, rule);

		// treat unordered groups as regular groups
		ff.setUnorderedStrategy(FollowerFunctionImpl.UnorderedStrategy.SEQUENCE);

		Pda<ISerState, RuleCall> pda = pdaUtil.create(cfg, ff, new SerializerPDAElementFactory());
		return pdaUtil.filterOrphans(pda, new SerializerPDACloneFactory());
	}

@SuppressWarnings("restriction")
public class MyDslPDAUtil extends PdaUtil {
	
	@Override
	public <S, P, E, T, D extends Pda<S, P>> D create(Cfg<E, T> cfg, FollowerFunction<E> ff,
			PdaFactory<D, S, P, ? super E> fact) {
		((FollowerFunctionImpl<E, T>)ff).setUnorderedStrategy(UnorderedStrategy.SEQUENCE);
		return super.create(cfg, ff, fact);
	}

}