@Override
  public List<LuceneResultStruct<K, V>> next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    List<LuceneResultStruct<K, V>> result = advancePage();
    currentPage = null;
    return result;
  }
The page size the user wants.
geode-lucene/src/main/java/org/apache/geode/cache/lucene/internal/PageableLuceneQueryResultsImpl.java