Term term = termEnum.term();
if (term == null || term.field() != field) break;
// LUCENE MONITOR: 4.0, move to use bytes!
UnicodeUtil.UTF8Result utf8Result = Unicode.fromStringAsUtf8(term.text());
termDocs.seek(termEnum);
while (termDocs.next()) {
// when traversing, make sure to ignore deleted docs, so the key->docId will be correct
if (!reader.isDeleted(termDocs.doc())) {
filter.add(utf8Result.result, 0, utf8Result.length);
}