Random random = new Random();
      byte[] expected = factory.getExpected(bytes);
      // if expected.length == 0, off has to be 0 but length doesn't matter--result will be empty
      int off = expected.length == 0 ? 0 : random.nextInt(expected.length);
      int len = expected.length == 0 ? 4 : random.nextInt(expected.length - off);

      ByteSourceFactory sliced = SourceSinkFactories.asSlicedByteSourceFactory(factory, off, len);

     * 
     * @param hostname
     * @return whether this is an IP address
     */
    public static boolean isDotQuadIP ( String hostname ) {
        if ( Character.isDigit(hostname.charAt(0)) ) {
            int i, len, dots;
            char[] data;

            i = dots = 0; /* quick IP address validation */
            len = hostname.length();
            data = hostname.toCharArray();

	_ = x[batchJobMetricReplication-0]
	_ = x[batchJobMetricKeyRotation-1]
	_ = x[batchJobMetricExpire-2]
}

const _batchJobMetric_name = "ReplicationKeyRotationExpire"

var _batchJobMetric_index = [...]uint8{0, 11, 22, 28}

func (i batchJobMetric) String() string {
	if i >= batchJobMetric(len(_batchJobMetric_index)-1) {
		return "batchJobMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}

	_ = x[healingMetricBucket-0]
	_ = x[healingMetricObject-1]
	_ = x[healingMetricCheckAbandonedParts-2]
}

const _healingMetric_name = "BucketObjectCheckAbandonedParts"

var _healingMetric_index = [...]uint8{0, 6, 12, 31}

func (i healingMetric) String() string {
	if i >= healingMetric(len(_healingMetric_index)-1) {
		return "healingMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}

	"encoding/base64"
	"fmt"
	"io"
	"strings"

	"github.com/klauspost/reedsolomon"
)

// getDataBlockLen - get length of data blocks from encoded blocks.
func getDataBlockLen(enBlocks [][]byte, dataBlocks int) int {
	size := 0
	// Figure out the data block length.
	for _, block := range enBlocks[:dataBlocks] {
		size += len(block)
	}
	return size
}

// Writes all the data blocks from encoded blocks until requested

    private final ByteArrayOutputStream out = new ByteArrayOutputStream();

    @Override
    protected void update(byte b) {
      out.write(b);
    }

    @Override
    protected void update(byte[] b, int off, int len) {
      out.write(b, off, len);
    }

    byte[] bytes() {
      return out.toByteArray();
    }

    void assertBytes(byte[] expected) {
      assertArrayEquals(expected, bytes());

   *
   * <p>See {@link #verify(boolean, String, Object...)} for details.
   *
   * @since 23.1 (varargs overload since 17.0)
   */
  public static void verify(boolean expression, String errorMessageTemplate, int p1, int p2) {
    if (!expression) {
      throw new VerifyException(lenientFormat(errorMessageTemplate, p1, p2));
    }
  }

  /**

  }

  static void populateMultimapForValues(Multimap<Integer, String> multimap, String[] elements) {
    for (int i = 0; i < elements.length; i++) {
      multimap.put(i % 2, elements[i]);
    }
  }

  static void populateMultimapForKeys(Multimap<String, Integer> multimap, String[] elements) {
    for (int i = 0; i < elements.length; i++) {
      multimap.put(elements[i], i);
    }
  }

  /**

        cipher.init(Cipher.DECRYPT_MODE, dataKey);

        int plainDataLength = data.length - KerberosConstants.CHECKSUM_SIZE;
        byte[] plainData = cipher.doFinal(data, KerberosConstants.CHECKSUM_SIZE, plainDataLength);

        byte[] plainDataChecksum = getHmac(plainData, codeHmac);
        if ( plainDataChecksum.length >= KerberosConstants.CHECKSUM_SIZE )
            for ( int i = 0; i < KerberosConstants.CHECKSUM_SIZE; i++ )

        return NtlmUtil.computeResponse(responseKeyLM, serverChallenge, clientChallenge, 0, clientChallenge.length);
    }


    static byte[] computeResponse ( byte[] responseKey, byte[] serverChallenge, byte[] clientData, int offset, int length ) {
        MessageDigest hmac = Crypto.getHMACT64(responseKey);
        hmac.update(serverChallenge);
        hmac.update(clientData, offset, length);
        byte[] mac = hmac.digest();