private static Searcher createSecondSearcher(ComponentId componentId, boolean ordered) {
        if (ordered)
            return new TestSearcher2(componentId);
        else
            return new TestSearcher(componentId);
    }
A search chain consisting of two searchers.
@author bratseth
@author Tony Vaagenes
container-search/src/test/java/com/yahoo/search/searchchain/test/SimpleSearchChain.java