@Override
        public Result search(Query query,Execution execution) {
            Chain<Searcher> forwardTo=execution.context().searchChainRegistry().getChain("someChainId");
            return new Execution(forwardTo,execution.context()).search(query);

        }
Tests basic search chain execution functionality

@author bratseth
container-search/src/test/java/com/yahoo/search/searchchain/test/ExecutionTestCase.java