@Override
        public Result search(Query query, Execution execution) {
            return execution.search(query);
        }
Creates a search chain which always returns a result with one hit containing information given in this

@param sdName the search definition type of the returned hit
@param content the content of the "dynteaser" field of the returned hit
container-search/src/test/java/com/yahoo/search/rendering/XMLRendererTestCase.java