}

        isInit = true;
        if (logger.isInfoEnabled()) {
            logger.info("S3 client initialized successfully: endpoint={}, region={}", endpoint, region);
        }
    }

    /**
     * Checks if a bucket exists in the object storage.
     * @param name the name of the bucket to check

// If some data is available but not len(p) bytes, Read conventionally returns what is available instead of waiting for more.
// When Read encounters an error or end-of-file condition after successfully reading n > 0 bytes, it returns the number of bytes read.
// It may return the (non-nil) error from the same call or return the error (and n == 0) from a subsequent call.

    }

    @Test
    @DisplayName("Test constructor with configuration")
    void testConstructor() {
        assertNotNull(response);
        // Response is successfully created with configuration
        assertTrue(response instanceof NetServerEnum2Response);
    }

    @Test
    @DisplayName("Test writeSetupWireFormat returns 0")
    void testWriteSetupWireFormat() {

   *
   *   o DIRTY lines track that an entry is actively being created or updated. Every successful
   *     DIRTY action should be followed by a CLEAN or REMOVE action. DIRTY lines without a matching
   *     CLEAN or REMOVE indicate that temporary files may need to be deleted.
   *
   *   o CLEAN lines track a cache entry that has been successfully published and may be read. A
   *     publish line is followed by the lengths of each of its values.

      super(NOT_RUN);
      this.delegate = delegate;
      this.sequencer = sequencer;
    }

    @Override
    public void execute(Runnable task) {
      // If this operation was successfully cancelled already, calling the runnable will be a noop.
      // This also avoids a race where if outputFuture is cancelled, it will call taskFuture.cancel,

        }
    }

    /**
     * Offers a document for thumbnail generation.
     *
     * @param docMap the document data map
     * @return true if the task was successfully added to the queue
     */
    public boolean offer(final Map<String, Object> docMap) {
        for (final ThumbnailGenerator generator : generatorList) {
            if (generator.isTarget(docMap)) {

	if err == io.EOF && size != 0 {
		err = io.ErrUnexpectedEOF
	}
	if err != nil && err != io.EOF {
		cr.err = err
		return n, cr.err
	}

	// Once we have read the entire chunk successfully, we verify
	// that the received signature matches our computed signature.
	cr.chunkSHA256Writer.Write(cr.buffer)
	newSignature := cr.getChunkSignature()
	if !compareSignatureV4(string(signature[16:]), newSignature) {

		}
		// Migrate successful v1 => v2, proceed to v2 => v3
		version = formatErasureVersionV2
		fallthrough
	case formatErasureVersionV2:
		formatData, err = formatErasureMigrateV2ToV3(formatData, export, version)
		if err != nil {
			return nil, nil, fmt.Errorf("Drive %s: %w", export, err)
		}
		// Migrate successful v2 => v3, v3 is latest
		// version = formatXLVersionV3

      int crossOver = crossOver(vacated, toTrickle);
      if (crossOver == vacated) {
        return null;
      }
      // Successfully crossed over from min to max.
      // Bubble up max levels.
      E parent;
      // If toTrickle is moved up to a parent of removeIndex, the parent is

     * adds to the delete cache for batch processing.
     *
     * @param paramMap the data store parameters
     * @param dataMap the data map containing the URL to delete
     * @return true if the deletion was processed successfully, false otherwise
     */
    protected boolean deleteDocument(final DataStoreParams paramMap, final Map<String, Object> dataMap) {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();