public void consumeInterned(final FeedKey feedKey,
                                    final Consumer<FeedKey> feedKeyConsumer) {
            final FeedKey internedFeedKey = intern(feedKey);
            if (feedKey != internedFeedKey) {
                feedKeyConsumer.accept(internedFeedKey);
            }
        }
@param feedKey         The {@link FeedKey} to intern.
@param feedKeyConsumer Called with the interned {@link FeedKey} only if it is
                       not the same instance as the supplied feedKey.
stroom-proxy/stroom-proxy-repo/src/main/java/stroom/proxy/repo/FeedKey.java