HCOLL-343 HCOLL-227 Remove old entries from ReplicatedChronicleMap

src/main/java/net/openhft/chronicle/set/SetFromMap.java

@@ -144,6 +144,11 @@ class SetFromMap<E> extends AbstractSet<E>
         throw new UnsupportedOperationException();
     }
 
+    @Override
+    public int segments() {
+        return m.segments();
+    }
+
     @Override
     public boolean forEachEntryWhile(Predicate<? super SetEntry<E>> predicate) {
         throw new UnsupportedOperationException();
@@ -163,4 +168,9 @@ class SetFromMap<E> extends AbstractSet<E>
     public void close() {
         m.close();
     }
+
+    @Override
+    public boolean isOpen() {
+        return m.isOpen();
+    }
 }