public Integer getSuggestPopularWordWindowSizeAsInteger() {
                        return 5;
                    }

                    @Override
                    public Integer getSuggestPopularWordQueryFreqAsInteger() {
                        return 1;
                    }
                };
                cache = CacheBuilder.newBuilder()

                        .setWindowSize(fessConfig.getSuggestPopularWordWindowSizeAsInteger())
                        .setQueryFreqThreshold(fessConfig.getSuggestPopularWordQueryFreqAsInteger());
                popularWordsRequestBuilder.setSeed(baseSeed);
                stream(baseTags).of(stream -> stream.forEach(tag -> popularWordsRequestBuilder.addTag(tag)));