if err != nil {
			return nil, nil, fmt.Errorf("Drive %s: %w", export, err)
		}
		// Migrate successful v1 => v2, proceed to v2 => v3
		version = formatErasureVersionV2
		fallthrough
	case formatErasureVersionV2:
		formatData, err = formatErasureMigrateV2ToV3(formatData, export, version)
		if err != nil {
			return nil, nil, fmt.Errorf("Drive %s: %w", export, err)
		}

			return err
		}
	case config.PolicyOPASubSys:
		// In case legacy OPA config is being set, we treat it as if the
		// AuthZPlugin is being set.
		subSys = config.PolicyPluginSubSys
		fallthrough
	case config.PolicyPluginSubSys:
		if ppargs, err := polplugin.LookupConfig(s, GetDefaultConnSettings(), xhttp.DrainBody); err != nil {
			return err
		} else if ppargs.URL == nil {

</p>

<h3 id="Fallthrough_statements">Fallthrough statements</h3>

<p>
A "fallthrough" statement transfers control to the first statement of the
next case clause in an <a href="#Expression_switches">expression "switch" statement</a>.
It may be used only as the final non-empty statement in such a clause.
</p>

<pre class="ebnf">
FallthroughStmt = "fallthrough" .
</pre>

	// Get canonical headers.
	var buf bytes.Buffer
	for _, k := range headers {
		buf.WriteString(k)
		buf.WriteByte(':')
		switch {
		case k == "host":
			buf.WriteString(req.URL.Host)
			fallthrough
		default:
			for idx, v := range headerMap[k] {
				if idx > 0 {
					buf.WriteByte(',')
				}
				buf.WriteString(v)
			}
			buf.WriteByte('\n')
		}
	}
	canonicalHeaders := buf.String()

	if p == nil {
		return
	}
	var ch chan<- ReplicationWorkerOperation
	switch doi.OpType {
	case replication.HealReplicationType, replication.ExistingObjectReplicationType:
		fallthrough
	default:
		ch = p.getWorkerCh(doi.Bucket, doi.ObjectName, 0)
	}

	select {
	case <-p.ctx.Done():
	case ch <- doi:
	default:
		globalReplicationPool.queueMRFSave(doi.ToMRFEntry())