acle.com/javase/8/docs/api/java/util/function/ToLongFunction.html#java.util.function.ToLongFunction" name="java.util.function.ToLongFunction" id="java.util.function.ToLongFunction" class="extype">ToLongFunction</a>[_ &gt;: <a href="HeapHistogramEntry.html" name="com.workday.warp.heaphistogram.HeapHistogramEntry" id="com.workday.warp.heaphistogram.HeapHistogramEntry" class="extype">HeapHistogramEntry</a> &lt;: <span name="scala.AnyRef" class="extype">AnyRef</span>]</span>)</span><span class="result">: <a hre