=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val executor = Executors.newScheduledThreadPool(1)

		return err
	}

	update, err := meta.validate(z.serverPools)
	if err != nil {
		return err
	}

	// if no update is needed return right away.
	if !update {
		z.poolMetaMutex.Lock()
		z.poolMeta = meta
		z.poolMetaMutex.Unlock()
	} else {
		newMeta := newPoolMeta(z, meta)
		if err = newMeta.save(ctx, z.serverPools); err != nil {
			return err

  // way in such a visibility issue would surface is most likely as a failure of cancel() to
  // propagate to the input. Cancellation propagation is fundamentally racy so this is fine.
  //
  // Future versions of the JMM may revise safe construction semantics in such a way that we can
  // safely publish these objects and we won't need this whole discussion.

	}

	clientETag, err := etag.FromContentMD5(r.Header)
	if err != nil {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrInvalidDigest), r.URL)
		return
	}

	// if Content-Length is unknown/missing, throw away
	size := r.ContentLength

	rAuthType := getRequestAuthType(r)
	// For auth type streaming signature, we need to gather a different content length.
	switch rAuthType {

Boston, MA 02110-1335
USA

Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your freedom to
share and change it. By contrast, the GNU General Public License is
intended to guarantee your freedom to share and change free software--to
make sure the software is free for all its users. This General Public

                        log.debug("Server " + this + " returned zero credits for " + curReq);
                    } else {
                        log.warn("Server " + this + " took away all our credits");
                    }
                } else if (!curReq.isResponseAsync()) {
                    if (log.isTraceEnabled()) {
                        log.trace("Adding credits " + grantedCredits);

			// should be returned upwards.
			return res.oi, res.zIdx, err
		}
		// When its a delete marker and versionID is empty
		// we should simply return the error right away.
		if res.oi.DeleteMarker && opts.VersionID == "" {
			return res.oi, res.zIdx, err
		}
	}

	object = decodeDirObject(object)
	if opts.VersionID != "" {

	var (
		val any
		err error
	)
	if store.group != nil {
		val, err, _ = store.group.Do(accessKey, newCachePopulate)
	} else {
		val, err = newCachePopulate()
	}

	// Return error right away if any.
	if err != nil {
		if errors.Is(err, errNoSuchUser) || errors.Is(err, errConfigNotFound) {
			return nil
		}
		return err
	}

	newCache, ok := val.(*iamCache)
	if !ok {

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## **Notable Features**