public void register(Searcher searcher) {
        super.register(searcher.getId(), searcher);
    }
A registry of searchers. This is instantiated and recycled in the context of an owning search chain registry.
This class exists for legacy purposes only, to preserve the public API for retrieving searchers from Vespa 4.2.

@author bratseth
container-search/src/main/java/com/yahoo/search/searchchain/SearcherRegistry.java