">Collector</a>&lt;<a href="../../../jakarta/json/JsonValue.html" title="interface in jakarta.json">JsonValue</a>,T,<a href="../../../jakarta/json/JsonArray.html" title="interface in jakarta.json">JsonArray</a>&gt;&nbsp;downstream)</code>
<div class="block">Constructs a <code>java.util.stream.Collector</code> that implements a "group by" operation on the
 input <code>JsonValue</code> elements.</div>
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