}()
		runtime.Gosched()

		// unlock the manual lock
		nsLk.lockMapMutex.Unlock()

		// To trigger the race:
		// 1) lk3 or lk4 need to advance and increment the ref on the existing resource,
		//    successfully acquiring the lock.
		// 2) lk2 then needs to advance and remove the resource from lockMap.
		// 3) lk3 or lk4 (whichever didn't execute in step 1) then executes and creates

	disks := er.getDisks()
	// Assume (N/2 + 1) quorum for Delete()
	// this is a theoretical assumption such that
	// for delete's we do not need to honor storage
	// class for objects that have reduced quorum
	// due to storage class - this only needs to be honored
	// for Read() requests alone that we already do.
	writeQuorum := len(disks)/2 + 1

	g := errgroup.WithNErrs(len(disks))

## FAQ

> Why is this change needed?

Before, there were two separate mechanisms - S3 objects got encrypted using a KMS,
if present, and the IAM / configuration data got encrypted with the root credentials.

// When clients request content hosted on a particular source domain and that content make requests
// directed towards a domain other than its own, the remote domain needs to host a cross-domain
// policy file that grants access to the source domain, allowing the client to continue the transaction.
func setCrossDomainPolicyMiddleware(h http.Handler) http.Handler {

			}
		}
		if IsErr(err, []error{
			nil,
			context.Canceled,
			context.DeadlineExceeded,
			// io.EOF is expected and should be returned but no need to log it.
			io.EOF,
		}...) {
			// Expected good errors we don't need to return error.
			return entries, err
		}
		entries.truncate(0)
		go func() {
			rpc := globalNotificationSys.restClientFromHash(pathJoin(o.Bucket, o.Prefix))

## Combine predefined responses and custom ones { #combine-predefined-responses-and-custom-ones }

You might want to have some predefined responses that apply to many *path operations*, but you want to combine them with custom responses needed by each *path operation*.

For those cases, you can use the Python technique of "unpacking" a `dict` with `**dict_to_unpack`:

```Python
old_dict = {
    "old key": "old value",

    }

    @Test
    void messageAndCauseConstructor_setsMessageAndCause_withoutInteractingWithCause() {
        // Arrange - mock cause to verify no interactions are needed to construct
        Throwable cause = Mockito.mock(Throwable.class);
        String message = "forced downgrade detected";

        // Act

	EvalMetadataFn      EvalMetadataFn      // only set for retention settings, meant to be used only when updating metadata in-place.
	DeleteReplication   ReplicationState    // Represents internal replication state needed for Delete replication
	Transition          TransitionOptions
	Expiration          ExpirationOptions
	LifecycleAuditEvent lcAuditEvent

		if success {
			os.Exit(0)
		}

		os.Exit(1)
	}

	stopProcess := func() bool {
		shutdownHealMRFWithTimeout() // this can take time sometimes, it needs to be executed
		// before stopping s3 operations

		// send signal to various go-routines that they need to quit.
		cancelGlobalContext()

		if httpServer := newHTTPServerFn(); httpServer != nil {

Each section gradually builds on the previous ones, but it's structured to separate topics, so that you can go directly to any specific one to solve your specific API needs.

It is also built to work as a future reference so you can come back and see exactly what you need.

## Run the code { #run-the-code }

All the code blocks can be copied and used directly (they are actually tested Python files).