@Deprecated
    @Override
    public void init(final ProcessorContext context, final StateStore root) {
        internal.init(context, root);
    }
Conceptually, {@link MeteredVersionedKeyValueStore} should {@code extend}
{@link MeteredKeyValueStore}, but due to type conflicts, we cannot do this. (Specifically,
the first needs to be {@link VersionedKeyValueStore} while the second is {@link KeyValueStore}
and the two interfaces conflict.) Thus, we use an internal <it>instance</it> of
{@code MeteredKeyValueStore} to mimic inheritance instead.
<p>
It's not ideal because it requires an extra step to translate between the APIs of
{@link VersionedKeyValueStore} in {@link MeteredVersionedKeyValueStore} and
the APIs of {@link TimestampedKeyValueStore} in {@link MeteredVersionedKeyValueStoreInternal}.
This extra step is all that the methods of {@code MeteredVersionedKeyValueStoreInternal} do.
<p>
Note that the addition of {@link #get(Object, long)} and {@link #delete(Object, long)} in
this class are to match the interface of {@link VersionedKeyValueStore}.
streams/src/main/java/org/apache/kafka/streams/state/internals/MeteredVersionedKeyValueStore.java