@Override
    public boolean shouldLowercase(WordItem word, IndexFacts.Session settings) {
        return true;
    }
Transform all terms in the incoming query tree and highlight terms to lower
case. This searcher is a compatibility layer for customers needing to use
FSAs created for pre-5.1 systems.

<p>
Add this searcher to your search chain before any searcher running
case-dependent automata with only lowercased contents, query transformers
assuming lowercased input etc. Refer to the Vespa documentation on search
chains and search chain ordering.
</p>

@author Steinar Knutsen
container-search/src/main/java/com/yahoo/search/querytransform/AllLowercasingSearcher.java