@Override
    public V get(final K key, final Function<K, V> valueProvider) {
        LOGGER.trace(() -> buildMessage("get", key));
        return getCache().get(key, valueProvider);
    }
Subclasses should implement this method to add to the cacheBuilder as required
and return a cache built from cacheBuilder. The builder already has a
removalNotificationConsumer if applicable and recordStats has been set.
stroom-cache/stroom-cache-impl/src/main/java/stroom/cache/impl/AbstractStroomCache.java