private void addProviderSearchers() {
        for (ChainedComponentModel searcherModel : LocalProviderSpec.searcherModels) {
            addInnerComponent(new Searcher<>(searcherModel));
        }
    }
Config producer for search chain responsible for sending queries to a local cluster.

@author Tony Vaagenes
config-model/src/main/java/com/yahoo/vespa/model/container/search/searchchain/LocalProvider.java