@Override
    public List<String> selectList(String text) {
        List<String> results = new ArrayList<String>();
        for (Selector selector : selectors) {
            List<String> strings = selector.selectList(text);
            results.addAll(strings);
        }
        return results;
    }
All extractors will do extracting separately, <br>
and the results of extractors will combined as the final result.
@author code4crafter@gmail.com <br>
@since 0.2.0
webmagic-core/src/main/java/us/codecraft/webmagic/selector/OrSelector.java