+
+/**
+ * Comparator that sorts Sones by their [last activity][Sone.getTime], least
+ * recently active Sones first.
+ */
+@get:JvmName("lastActivityComparator") // TODO: remove once Sone is 100% Kotlin
+val lastActivityComparator: Comparator<Sone> =
+ comparing(Sone::getTime).reversed()