import java.util.Iterator;
import java.util.Map.Entry;
+import java.util.Spliterator;
/**
* Support for EntrySet operations required by the Map interface.
return map().remove(key, value);
}
+
+ @Override
+ int characteristics() {
+ return Spliterator.DISTINCT | Spliterator.CONCURRENT | Spliterator.NONNULL;
+ }
}