public long getEntryCrc(@NotNull String relativePath) throws IOException {
    try (ResourceHandle<ZipFile> zipRef = acquireZipHandle()) {
      ZipFile zip = zipRef.get();
      ZipEntry entry = zip.getEntry(relativePath);
      if (entry != null) {
        return entry.getCrc();
      }
    }

    throw new FileNotFoundException(getFile() + "!/" + relativePath);
  }
public long getEntryCrc(@NotNull String relativePath)