@Override
    public boolean containsKey(Object key) {
        return underlyingMap.containsKey(key);
    }
A map which presents a lightweight view of another "underlying" map. Values in the
underlying map will be translated by a callback before they are returned.
<br>
This class is not internally synchronized. (Typically the underlyingMap is treated as
immutable.)
server-common/src/main/java/org/apache/kafka/server/util/TranslatedValueMapView.java