@Override
        public Result search(Query query,Execution execution) {
            Result result=execution.search(query);
            Hit hit=new Hit(getId().stringValue() + "-" + counter);
            hit.setFillable();
            result.hits().add(hit);
            return result;
        }
Tests basic search chain execution functionality

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