s.WriteString(cred.SessionToken)
	}
	if !cred.Expiration.IsZero() && !cred.Expiration.Equal(timeSentinel) {
		s.WriteString("\n")
		s.WriteString(cred.Expiration.String())
	}
	return s.String()
}

// IsExpired - returns whether Credential is expired or not.
func (cred Credentials) IsExpired() bool {
	if cred.Expiration.IsZero() || cred.Expiration.Equal(timeSentinel) {
		return false
	}

const (
	transitionWorkers = "transition_workers"
	expirationWorkers = "expiration_workers"
	// EnvILMTransitionWorkers env variable to configure number of transition workers
	EnvILMTransitionWorkers = "MINIO_ILM_TRANSITION_WORKERS"
	// EnvILMExpirationWorkers env variable to configure number of expiration workers
	EnvILMExpirationWorkers = "MINIO_ILM_EXPIRATION_WORKERS"
)

var (
	defaultHelpPostfix = func(key string) string {

This is available only on MinIO as an extension to the Expiration feature. The following rule makes it possible to remove all versions of an object under 
the prefix `user-uploads/` as soon as the latest object satisfies the expiration criteria. 

> NOTE: If the latest object is a delete marker then filtering based on `Filter.Tags` is ignored and 
> if the DELETE marker modTime satisfies the `Expiration.Days` then all versions of the object are 

	                    </Rule>`,
			expectedErr: errInvalidRuleID,
		},
		{ // Rule with empty ID
			inputXML: `<Rule>
							<ID></ID>
							<Filter><Prefix></Prefix></Filter>
							<Expiration>
								<Days>365</Days>
							</Expiration>
                            <Status>Enabled</Status>
	                    </Rule>`,
			expectedErr: nil,
		},
		{ // Rule with empty status
			inputXML: ` <Rule>

./mc ilm edit --id "${id}" --expire-days "100" sitea/bucket
sleep 30s

count1=$(./mc ilm rule list sitea/bucket --json | jq '.config.Rules[0].Expiration.Days')
count2=$(./mc ilm rule list siteb/bucket --json | jq '.config.Rules[0].Expiration.Days')
if [ $count1 -ne 100 ]; then
	echo "BUG: Expiration days not changed on 'sitea'"
	exit 1
fi

    }
    checkEviction(cchm);
    checkExpiration(cchm);
  }

  /**
   * Peeks into the cache's internals to verify that its expiration queue is consistent. Verifies
   * that the next/prev links in the expiration queue are correct, and that the queue is ordered by
   * expiration time.
   */
  static void checkExpiration(Cache<?, ?> cache) {
    if (hasLocalCache(cache)) {
      checkExpiration(toLocalCache(cache));

	var rawPolicy struct {
		Expiration string        `json:"expiration"`
		Conditions []interface{} `json:"conditions"`
	}

	d.DisallowUnknownFields()
	if err := d.Decode(&rawPolicy); err != nil {
		return PostPolicyForm{}, err
	}

	parsedPolicy := PostPolicyForm{}

	// Parse expiry time.
	parsedPolicy.Expiration, err = time.Parse(time.RFC3339Nano, rawPolicy.Expiration)

      <AssumeRoleId/>
    </AssumedRoleUser>
    <Credentials>
      <AccessKeyId>Y4RJU1RNFGK48LGO9I2S</AccessKeyId>
      <SecretAccessKey>sYLRKS1Z7hSjluf6gEbb9066hnx315wHTiACPAjg</SecretAccessKey>
      <Expiration>2019-08-08T20:26:12Z</Expiration>

  <AssumeRoleWithCustomTokenResult>
    <Credentials>
      <AccessKeyId>24Y5H9VHE14H47GEOKCX</AccessKeyId>
      <SecretAccessKey>H+aBfQ9B1AeWWb++84hvp4tlFBo9aP+hUTdLFIeg</SecretAccessKey>
      <Expiration>2022-05-25T19:56:34Z</Expiration>

    }
    checkEviction(cchm);
    checkExpiration(cchm);
  }

  /**
   * Peeks into the cache's internals to verify that its expiration queue is consistent. Verifies
   * that the next/prev links in the expiration queue are correct, and that the queue is ordered by
   * expiration time.
   */
  static void checkExpiration(Cache<?, ?> cache) {
    if (hasLocalCache(cache)) {
      checkExpiration(toLocalCache(cache));