// vol. 2, Knuth, 4.2.2, (16) to the two-variable case. We have two value series x_i and y_i.
    // We define the arithmetic means X_n = 1/n \sum_{i=1}^n x_i, and Y_n = 1/n \sum_{i=1}^n y_i.
    // We also define the sum of the products of the differences from the means
    //           C_n = \sum_{i=1}^n x_i y_i - n X_n Y_n
    // for all n >= 1. Then for all n > 1:
    //       C_{n-1} = \sum_{i=1}^{n-1} x_i y_i - (n-1) X_{n-1} Y_{n-1}

   */
  protected long edgeCount() {
    long degreeSum = 0L;
    for (N node : nodes()) {
      degreeSum += degree(node);
    }
    // According to the degree sum formula, this is equal to twice the number of edges.
    checkState((degreeSum & 1) == 0);
    return degreeSum >>> 1;
  }

  /**

		"}"
    if "%MVNW_VERBOSE%" == "true" (
        echo Finished downloading %WRAPPER_JAR%
    )
)
@REM End of extension

@REM If specified, validate the SHA-256 sum of the Maven wrapper jar file
SET WRAPPER_SHA_256_SUM=""
FOR /F "usebackq tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
    IF "%%A"=="wrapperSha256Sum" SET WRAPPER_SHA_256_SUM=%%B

	return cred, owner, ErrNone
}

// sumHMAC calculate hmac between two input byte array.
func sumHMAC(key []byte, data []byte) []byte {
	hash := hmac.New(sha256.New, key)
	hash.Write(data)
	return hash.Sum(nil)
}

// extractSignedHeaders extract signed headers from Authorization header
func extractSignedHeaders(signedHeaders []string, r *http.Request) (http.Header, APIErrorCode) {
	reqHeaders := r.Header

        getMultiset().count(element));

    int size = 0;
    for (Multiset.Entry<E> entry : getMultiset().entrySet()) {
      size += entry.getCount();
    }
    assertEquals(
        "multiset.size() should be the sum of the counts of all entries",
        size,
        getMultiset().size());
  }

  /** Call the {@code setCount()} method under test, and check its return value. */

        regA(builder);
        return builder;
    }

    protected SumAggregationBuilder regSumA(String name, String field) {
        SumAggregationBuilder builder = AggregationBuilders.sum(name).field(field);
        regA(builder);
        return builder;
    }

    protected ExtendedStatsAggregationBuilder regExtendedStatsA(String name, String field) {

        regA(builder);
        return builder;
    }

    protected SumAggregationBuilder regSumA(String name, String field) {
        SumAggregationBuilder builder = AggregationBuilders.sum(name).field(field);
        regA(builder);
        return builder;
    }

    protected ExtendedStatsAggregationBuilder regExtendedStatsA(String name, String field) {

niksisnd,?r&aidanetah,ot&ceridevitcaym,sitk,??u:goo,,w-morf,x&alagkeeg,orp&hsilbup,mapson.duolc,???z&esdrocsid,tilbcitats-&proc-w,ssellaitnederc-w,w,???inu??m!.dni,?or?tsla??p!.&eman,nwo,??raf!.jrots,etats??s?t!.&gro?lim?mo&c?n??oc?ten?ude?vog???u&esum?rof??z!.&ca?gro?hcs?lim?moc?o&c?fni??ten?ude?vog?zib????n&315rmi--nx?a&brud?cilbuper?f?grompj?hkaga?m?ol?ssin?u&hix?qna??varac?yalo??b!.&gro?moc?oc,ten?ude?vog??c??c!.&ah?bh?c&a?s??d&5xq55--nx?g?s?uolcpanqym,?eh?g&la0do--nx?ro??h&a?q?s!.sa,??i&7a0...

niksisnd,?r&aidanetah,ot&ceridevitcaym,sitk,??u:goo,,w-morf,x&alagkeeg,orp&hsilbup,mapson.duolc,???z&esdrocsid,tilbcitats-&proc-w,ssellaitnederc-w,w,???inu??m!.dni,?or?tsla??p!.&eman,nwo,??raf!.jrots,etats??s?t!.&gro?lim?mo&c?n??oc?ten?ude?vog???u&esum?rof??z!.&ca?gro?hcs?lim?moc?o&c?fni??ten?ude?vog?zib????n&315rmi--nx?a&brud?cilbuper?f?grompj?hkaga?m?ol?ssin?u&hix?qna??varac?yalo??b!.&gro?moc?oc,ten?ude?vog??c??c!.&ah?bh?c&a?s??d&5xq55--nx?g?s?uolcpanqym,?eh?g&la0do--nx?ro??h&a?q?s!.sa,??i&7a0...

		{testBuckets[0], "unique/folder/1.txt", "content", nil, false},
		{testBuckets[1], "unique/folder/1.txt", "content", nil, true},
	}
	for _, object := range testObjects {
		md5Bytes := md5.Sum([]byte(object.content))
		_, err = obj.PutObject(context.Background(), object.parentBucket, object.name, mustGetPutObjReader(t, bytes.NewBufferString(object.content),