public boolean contains(Object o) {if (!(o instanceof Map.Entry))return false;Map.Entry<?,?> e = (Map.Entry<?,?>)o;V v = ConcurrentHashMap.this.get(e.getKey());return v != null && v.equals(e.getValue());}
public override bool contains(object o){if (!(o is java.util.MapClass.Entry<K, V>)){return false;}java.util.MapClass.Entry<object, object> e = (java.util.MapClass.Entry<object, object>)o;return this._enclosing.containsMapping(e.getKey(), e.getValue());}