return multimap.build().keySet();
                  }
                })
            .named("Multimaps.forMap.keySet")
            .withFeatures(FOR_MAP_FEATURES_ANY)
            .createTestSuite());

    // TODO: use collection testers on Multimaps.forMap.values

    suite.addTest(
        MultisetTestSuiteBuilder.using(
                new TestStringMultisetGenerator() {

  /**
   * UTF-8: eight-bit UCS Transformation Format.
   *
   * <p><b>Java 7+ users:</b> this constant should be treated as deprecated; use {@link
   * java.nio.charset.StandardCharsets#UTF_8} instead.
   *
   */
  public static final Charset UTF_8 = Charset.forName("UTF-8");

  /**
   * UTF-16BE: sixteen-bit UCS Transformation Format, big-endian byte order.
   *

            "type": "prometheus",
            "uid": "${datasource}"
          },
          "expr": "round(sum(irate(istio_requests_total{reporter=~\"$qrep\",destination_service=~\"$service\"}[5m])), 0.001)",
          "format": "time_series",
          "intervalFactor": 1,
          "refId": "A",
          "step": 4
        }
      ],
      "title": "Client Request Volume",
      "type": "stat"
    },
    {

    protected static Date toDate(final String str, final Locale locale) {
        for (final DateFormat format : iterable(new DateFormatIterator(locale), new PlainDateFormatIterator(str, locale))) {
            if (format == null) {
                continue;
            }
            final Date date = toDate(str, format);
            if (date != null) {
                return date;
            }
        }

		message:    "Time stamp format pattern contains a valid format symbol that cannot be applied to time stamp parsing in the SQL expression.",
		statusCode: 400,
		cause:      err,
	}
}

func errEvaluatorTimestampFormatPatternDuplicateFields(err error) *s3Error {
	return &s3Error{
		code:       "EvaluatorTimestampFormatPatternDuplicateFields",

            define its own format and semantics. This was generally a properties format.
            <p>Since Maven 3.2.4, the type for this field has been changed to Properties to match the de-facto
            format.
            <p>Each toolchain defines its own properties names and semantics.
          </description>
        </field>

	}
}

// TestParseCredentialHeader - validates the format validator and extractor for the Credential header in an aws v4 request.
// A valid format of credential should be of the following format.
// Credential = accessKey + SlashSeparator+ scope
// where scope = string.Join([]string{  currTime.Format(yyyymmdd),
//
//				globalMinioDefaultRegion,
//	              	"s3",
//			        "aws4_request",

	// Storage operations.

	// Returns true if disk is online and its valid i.e valid format.json.
	// This has nothing to do with if the drive is hung or not responding.
	// For that individual storage API calls will fail properly. The purpose
	// of this function is to know if the "drive" has "format.json" or not
	// if it has a "format.json" then is it correct "format.json" or not.
	IsOnline() bool

	// Returns the last time this disk (re)-connected

`v1` format
```yaml
pools: # Specify the nodes and drives with pools
  -
    - "https://server-example-pool1:9000/mnt/disk{1...4}/"
    - "https://server{1...2}-pool1:9000/mnt/disk{1...4}/"
    - "https://server3-pool1:9000/mnt/disk{1...4}/"
    - "https://server4-pool1:9000/mnt/disk{1...4}/"
```

to `v2` format

```yaml
pools:
  - args:

// minioLogger use an instance of this to log in a standard format
type minioLogger struct{}

// Print implement Logger
func (log *minioLogger) Print(sessionID string, message interface{}) {
	if serverDebugLog {
		fmt.Printf("%s %s\n", sessionID, message)
	}
}

// Printf implement Logger
func (log *minioLogger) Printf(sessionID string, format string, v ...interface{}) {
	if serverDebugLog {
		if sessionID != "" {