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With 5.1, ResolvedConceptReferencesIterators? are populated with Lucene Document data on demand, meaning no data is pulled from the Lucene Documents until 'next' is called on the iterator. This means the initial resolve of the iterator will be much faster.
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now, resolve to a list of say, 2 results. resolve -> \'heart','heart attack'\?
this essentially gives you the top n results of your query.
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