static final int DEFAULT_SIZE = 3;

  // used to indicate blank table entries
  static final int UNSET = -1;

  /*
   * The array fields below are not initialized directly in the constructor, but they're initialized
   * by init(), which the constructor calls.
   */

  /** The keys of the entries in the map. */
  transient @Nullable Object[] keys;

  /** The values of the entries in the map. */

    public FessFileTransformer() {
        super();
    }

    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(FessFileTransformer.class);

    /**
     * Initializes the transformer after dependency injection.
     * Sets up the Fess configuration and data serializer components.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {

// acquire a write lock.
func TryLockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
	return lockedOpenFile(path, flag, perm, syscall.LOCK_NB)
}

// LockedOpenFile - initializes a new lock and protects
// the file from concurrent access across mount points.
// This implementation doesn't support all the open
// flags and shouldn't be considered as replacement
// for os.OpenFile().

    /**
     * The Fess configuration.
     */
    protected FessConfig fessConfig;

    /**
     * Constructor.
     */
    public SambaHelper() {
        super();
    }

    /**
     * Initializes the SambaHelper.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }

            assertNotNull(client);
        }
    }

    // Test instance fields initialization
    @Test
    public void test_instanceFieldsInitialization() {
        // Test that instance fields are properly initialized
        assertNotNull(crawlerEngineClient);
        // The actual client initialization happens lazily when needed
    }

    // Test that close method exists (inherited)
    @Test

    /**
     * Default constructor for file type helper.
     * Creates a new instance with default values.
     */
    public FileTypeHelper() {
        // Default constructor
    }

    /**
     * Initializes the file type mappings by loading configuration from Fess settings.
     * This method is called automatically after dependency injection is complete.
     * The mappings are loaded from the index filetype configuration property,

   * its runtime check.
   *
   * <p>An example use case for this method is in implementing an {@code Iterator<T>} whose {@code
   * next} field is lazily initialized. The type of that field would be {@code @Nullable T}, and the
   * code would be responsible for populating a "real" {@code T} (which might still be the value

   * its runtime check.
   *
   * <p>An example use case for this method is in implementing an {@code Iterator<T>} whose {@code
   * next} field is lazily initialized. The type of that field would be {@code @Nullable T}, and the
   * code would be responsible for populating a "real" {@code T} (which might still be the value

    : reader_(nullptr),
      v2_reader_(nullptr),
      var_to_shape_map_(nullptr),
      var_to_data_type_map_(nullptr) {
  // Depending on whether this is a V2 ckpt, initializes "reader_" or
  // "v2_reader_".
  std::vector<string> v2_path;
  if (Env::Default()->GetMatchingPaths(MetaFilename(filename), &v2_path).ok() &&
      !v2_path.empty()) {
    v2_reader_.reset(

            useHc5 = true;
            if (logger.isInfoEnabled()) {
                logger.info("Using HC5 HTTP client (Apache HttpComponents 5.x)");
            }
        }
    }

    /**
     * Initializes the selected HTTP client.
     * This method should be called after the DI container has injected both clients.
     */
    public void init() {
        if (useHc5) {
            if (hc5Client != null) {