docs: private void storeFileHashCache(Properties props) {
          File cacheFile = new File(this.targetDirectory, CACHE_PROPERTIES_FILENAME);
          try (OutputStream out = new BufferedOutputStream(new FileOutputStream(cacheFile))) {
              props.store(out, null);
          } catch (IOException e) {
              getLog().warn("Cannot store file hash cache properties file", e);
          }
      }