// See https://github.com/golang/go/blob/f7c5cbb82087c55aa82081e931e0142783700ce8/src/net/sendfile_linux.go#L20
		// Windows can lock up with this optimization, so we fall back to regular copy.
		sr, ok := rc.(*sendFileReader)
		if ok {
			// Sendfile sends in 4MiB chunks per sendfile syscall which is more than enough
			// for most setups.
			_, err = rf.ReadFrom(sr.Reader)

	diskFillFraction = 0.99

	// diskReserveFraction is the fraction of a disk where we will fill other server pools first.
	// If all pools reach this, we will use all pools with regular placement.
	diskReserveFraction = 0.15

	// diskAssumeUnknownSize is the size to assume when an unknown size upload is requested.
	diskAssumeUnknownSize = 1 << 30

### Step 5: return the content

```Python hl_lines="8"
{!../../../docs_src/first_steps/tutorial001.py!}
```

You can return a `dict`, `list`, singular values as `str`, `int`, etc.

You can also return Pydantic models (you'll see more about that later).

		if err != nil {
			return "", err
		}
		return c.SecretKey, nil
	}
	return secret, nil
}

// AssumeRole - implementation of AWS STS API AssumeRole to get temporary
// credentials for regular users on Minio.
// https://docs.aws.amazon.com/STS/latest/APIReference/API_AssumeRole.html
func (sts *stsAPIHandlers) AssumeRole(w http.ResponseWriter, r *http.Request) {
	ctx := newContext(r, w, "AssumeRole")

		default:
			return 0, err
		}
	}

	// Close the file descriptor.
	defer file.Close()

	st, err := file.Stat()
	if err != nil {
		return 0, err
	}

	// Verify it is a regular file, otherwise subsequent Seek is
	// undefined.
	if !st.Mode().IsRegular() {
		return 0, errIsNotRegular
	}

	if verifier == nil {
		n, err = file.ReadAt(buffer, offset)
		return int64(n), err

				key, subSys)
		}
		h = config.HelpKVS{value}
	}

	help := config.HelpKVS{}

	// Only for multiple targets, make sure
	// to list the ENV, for regular k/v EnableKey is
	// implicit, for ENVs we cannot make it implicit.
	if subSysHelp.MultipleTargets {
		key := madmin.EnableKey
		if envOnly {

type objAPITestType func(obj ObjectLayer, instanceType string, bucketName string,
	apiRouter http.Handler, credentials auth.Credentials, t *testing.T)

// Regular object test type.
type objTestType func(obj ObjectLayer, instanceType string, t TestErrHandler)

// Special test type for test with directories

	if err != nil {
		return false
	}
	if ok {
		return sys.IsAllowedServiceAccount(args, parentUser)
	}

	// Continue with the assumption of a regular user
	policies, err := sys.PolicyDBGet(args.AccountName, args.Groups...)
	if err != nil {
		return false
	}

	if len(policies) == 0 {
		// No policy found.
		return false
	}

	}
	defer root.Close()

	files, err := root.Readdir(-1)
	if err != nil {
		return nil, nil, false, err
	}
	for _, file := range files {
		// Ignore all
		// - regular files
		// - "CAs" directory
		// - any directory which starts with ".."
		if file.Mode().IsRegular() || file.Name() == "CAs" || strings.HasPrefix(file.Name(), "..") {
			continue
		}

     * but ATM we don't have a way to properly handle
     * [FirThisReference]s through the existing filters.
     *
     * We need a better way to decide shortening strategy
     * for labeled and regular `this` expressions (KT-63555).
     */
    private fun thisLabelShortenStrategy(thisReference: FirThisReference): ShortenStrategy {
        val referencedSymbol = thisReference.boundSymbol