return null;
}
}
};
final RecordSerializer serializer = RecordSerializer.get();
@SuppressWarnings("unchecked")
final RecordComparator comparator = new RecordComparator(new int[] {0}, new Class[] {IntValue.class});
this.psi = new KeyGroupedIteratorImmutable<Record>(this.sourceIter, serializer, comparator);
}