* auth param in the challenge at key null. Invalid headers and challenges are ignored.
   * No semantic validation is done, for example that `Basic` auth must have a `realm`
   * auth param, this is up to the caller that interprets these challenges.
   */
  fun challenges(): List<Challenge> {
    return headers.parseChallenges(
      when (code) {
        HTTP_UNAUTHORIZED -> "WWW-Authenticate"

	return valid
}

// isTierNameInUse returns tier type and true if there exists a remote tier by
// name tierName, otherwise returns madmin.Unsupported and false. N B this
// function is meant for internal use, where the caller is expected to take
// appropriate locks.
func (config *TierConfigMgr) isTierNameInUse(tierName string) (madmin.TierType, bool) {
	if t, ok := config.Tiers[tierName]; ok {
		return t.Type, true
	}

			return
		}
		return
	}
}

// listObjectsV2InArchive generates S3 listing result ListObjectsV2Info from zip file, all parameters are already validated by the caller.
func listObjectsV2InArchive(ctx context.Context, objectAPI ObjectLayer, bucket, prefix, token, delimiter string, maxKeys int, startAfter string, h http.Header) (ListObjectsV2Info, error) {

 * which approach to use, <b>don't worry</b> too much about it; just pick something that seems
 * reasonable and it will be fine.
 *
 * <ul>
 *   <li>If checking whether the <i>caller</i> has violated your method or constructor's contract
 *       (such as by passing an invalid argument), use the utilities of the {@link Preconditions}
 *       class instead.

// When the config has no selector labels, this method will treat it as qualified namespace level
// config. So configs passed into this method should only contains workload's namespaces configs
// and rootNamespaces configs, caller should be responsible for controlling configs passed
// in.
func findMatchedConfigs(podsLabels klabels.Set, configs []*config.Config) []*config.Config {
	var cfgs []*config.Config

	for _, cfg := range configs {

                sch.setMaximumCompressionRatio(maxCompressionRatio);
                sch.setOutputThreshold(maxUncompressionSize);

                //pass self to handle embedded documents if
                //the caller hasn't specified one.
                if (context.get(EmbeddedDocumentExtractor.class) == null) {
                    final Parser p = context.get(Parser.class);
                    if (p == null) {

                return loc;
            }
        }
    }


    /**
     * Use a exclusive connection for this tree
     * 
     * If an exclusive connection is used the caller must make sure that the tree handle is kept alive,
     * otherwise the connection will be disconnected once the usage drops to zero.
     * 
     * @param np
     *            whether to use an exclusive connection

		// side-channel check has failed, we shall take
		// the client offline in such situations.
		// generally all implementations should simply return
		// 403, but in situations where there is a dependency
		// with the caller to take the client offline purpose
		// fully it should make sure to respond with '412'
		// instead, see cmd/storage-rest-server.go for ideas.
		if c.HealthCheckFn != nil && resp.StatusCode == http.StatusPreconditionFailed {

// format of a log entry to the configured http endpoint.
// An internal buffer of logs is maintained but when the
// buffer is full, new logs are just ignored and an error
// is returned to the caller.
type Target struct {
	totalMessages  atomic.Int64
	failedMessages atomic.Int64
	status         atomic.Int32

	// Worker control
	workers    atomic.Int64
	maxWorkers int64

 * which approach to use, <b>don't worry</b> too much about it; just pick something that seems
 * reasonable and it will be fine.
 *
 * <ul>
 *   <li>If checking whether the <i>caller</i> has violated your method or constructor's contract
 *       (such as by passing an invalid argument), use the utilities of the {@link Preconditions}
 *       class instead.