// Enables running eager ops as functions.
  virtual void SetRunEagerOpAsFunction(bool enable) = 0;

  // Enables rewriting jit_compile functions.
  virtual void SetJitCompileRewrite(bool enable) = 0;

  // Sets the device placement policy for the current thread.
  virtual void SetThreadLocalDevicePlacementPolicy(
      ContextDevicePlacementPolicy policy) = 0;
  // Returns the device placement policy for the current thread.

	objInfo, err := getObjectInfo(ctx, bucket, object, gopts)
	if err != nil {
		// Versioning enabled quite possibly object is deleted might be delete-marker
		// if present set the headers, no idea why AWS S3 sets these headers.
		if objInfo.VersionID != "" && objInfo.DeleteMarker {
			w.Header()[xhttp.AmzVersionID] = []string{objInfo.VersionID}
			w.Header()[xhttp.AmzDeleteMarker] = []string{strconv.FormatBool(objInfo.DeleteMarker)}

 *  * DER: Distinguished Encoding Rules. This further constrains ASN.1 for deterministic encoding.
 *  * BER: Basic Encoding Rules.
 *
 * This class was implemented according to the [X.690 spec][[x690]], and under the advice of
 * [Lets Encrypt's ASN.1 and DER][asn1_and_der] guide.
 *
 * [x690]: https://www.itu.int/rec/T-REC-X.690
 * [asn1_and_der]: https://letsencrypt.org/docs/a-warm-welcome-to-asn1-and-der/
 */
internal class DerReader(source: Source) {

       * Returns an input stream containing one or more certificate PEM files. This implementation just
       * embeds the PEM files in Java strings; most applications will instead read this from a resource
       * file that gets bundled with the application.
       */
      private fun trustedCertificatesInputStream(): InputStream {
        ... // Full source omitted. See sample.
      }

```

////

## Set types

But then we think about it, and realize that tags shouldn't repeat, they would probably be unique strings.

And Python has a special data type for sets of unique items, the `set`.

Then we can declare `tags` as a set of strings:

//// tab | Python 3.10+

```Python hl_lines="12"
{!> ../../docs_src/body_nested_models/tutorial003_py310.py!}
```

////

func (list *TargetList) Exists(id TargetID) bool {
	list.RLock()
	defer list.RUnlock()

	_, found := list.targets[id]
	return found
}

// TargetIDResult returns result of Remove/Send operation, sets err if
// any for the associated TargetID
type TargetIDResult struct {
	// ID where the remove or send were initiated.
	ID TargetID
	// Stores any error while removing a target or while sending an event.
	Err error

				return "127.0.0.1"
			}
			return ip
		})
		nonInterIPV4s = mustGetLocalIP4().Intersection(hostIPs)
	}
	nonInterIPV6s := mustGetLocalIP6().Intersection(hostIPs)

	// If intersection of two IP sets is not empty, then the host is localhost.
	isLocalv4 := !nonInterIPV4s.IsEmpty()
	isLocalv6 := !nonInterIPV6s.IsEmpty()
	if port != "" {
		return (isLocalv4 || isLocalv6) && (port == localPort), nil
	}

		case "expect":
			// Golang http server strips off 'Expect' header, if the
			// client sent this as part of signed headers we need to
			// handle otherwise we would see a signature mismatch.
			// `aws-cli` sets this as part of signed headers.
			//
			// According to
			// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.20
			// Expect header is always of form:
			//

		uploadID          string // uploadID of the transaction.
		invalidPartNumber bool   // Sets an invalid multipart.
		maximumPartNumber bool   // Sets a maximum parts.
		accessKey         string
		secretKey         string
		// expected output.
		expectedRespStatus int
	}{

	u := url.URL{Path: path}
	return newXLStorage(Endpoint{
		URL:     &u,
		IsLocal: true,
		PoolIdx: 0,
		SetIdx:  0,
		DiskIdx: diskIdx,
	}, true)
}

// creates a temp dir and sets up xlStorage layer.
// returns xlStorage layer, temp dir path to be used for the purpose of tests.
func newXLStorageTestSetup(tb testing.TB) (*xlStorageDiskIDCheck, string, error) {
	diskPath := tb.TempDir()