@Override
        public void fill(Result result,String summaryClass,Execution execution) {
            result.hits().add(new Hit(getId().stringValue() + "-" + (counter++) + "-filled")); // Not something one would normally do in fill
        }
Tests basic search chain execution functionality

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