a.util">comparing</a>, <a href="http://d.android.com/reference/java/util/Comparator.html?is-external=true#comparing-java.util.function.Function-java.util.Comparator-" title="class or interface in java.util">comparing</a>, <a href="http://d.android.com/reference/java/util/Comparator.html?is-external=true#comparingDouble-java.util.function.ToDoubleFunction-" title="class or interface in java.util">comparingDouble</a>, <a href="http://d.android.com/reference/java/util/Comparator.html?is-external=true#comparing