   |  | public class GroupByIterator implements GroupIterator,LastPositionFinder,LookaheadIterator(Code)(Java Doc)
|  | public interface GroupIterator extends SequenceIterator(Code)(Java Doc)
|  | public interface LastPositionFinder extends SequenceIterator(Code)(Java Doc)
|  | public interface LookaheadIterator extends SequenceIterator(Code)(Java Doc)
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