@Override
    public int getNumWords() {
        int numWords = 0;
        for (Iterator<Item> j = getItemIterator(); j.hasNext();) {
            numWords += ((IndexedItem) j.next()).getNumWords();
        }
        return numWords;
    }
Phrase items uses a empty heading instead of "PHRASE "
container-search/src/main/java/com/yahoo/prelude/query/PhraseItem.java