docs: @Nullable
    public CloseableReference<CloseableImage> getCachedImage(@Nullable CacheKey cacheKey) {
      MemoryCache<CacheKey, CloseableImage> memoryCache = mBitmapMemoryCache;
      if (memoryCache == null || cacheKey == null) {
        return null;
      }
      CloseableReference<CloseableImage> closeableImage = memoryCache.get(cacheKey);
      if (closeableImage != null && !closeableImage.get().getQualityInfo().isOfFullQuality()) {
        closeableImage.close();
        return null;
      }
      return closeableImage;
    }