}
			if freeVersionID != "" {
				metaArr[index].SetTierFreeVersionID(freeVersionID)
			}
			if freeVersionMarker {
				metaArr[index].SetTierFreeVersion()
			}
		}
	}

	// Write unique `xl.meta` for each disk.
	if _, err = writeUniqueFileInfo(ctx, onlineDisks, "", srcBucket, srcObject, metaArr, writeQuorum); err != nil {
		return oi, toObjectErr(err, srcBucket, srcObject)
	}

///

## Schreiben des Codes, der den Callback dokumentiert { #write-the-callback-documentation-code }

Dieser Code wird nicht in Ihrer Anwendung ausgeführt, wir benötigen ihn nur, um zu *dokumentieren*, wie diese *externe API* aussehen soll.

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

{* ../../docs_src/events/tutorial002_py39.py hl[6] *}

Here, the `shutdown` event handler function will write a text line `"Application shutdown"` to a file `log.txt`.

/// info

### What is a Program { #what-is-a-program }

The word **program** is commonly used to describe many things:

* The **code** that you write, the **Python files**.
* The **file** that can be **executed** by the operating system, for example: `python`, `python.exe` or `uvicorn`.

		t.Fatalf("Unable to create object: %v", err)
	}

	for i, test := range xlStorageReadFileWithVerifyTests {
		h := test.algorithm.New()
		h.Write(data)
		if test.expError != nil {
			h.Write([]byte{0})
		}

		buffer := make([]byte, test.length)
		n, err := xlStorage.ReadFile(t.Context(), volume, test.file, int64(test.offset), buffer, NewBitrotVerifier(test.algorithm, h.Sum(nil)))

		t.Fatalf("%s : %s", instanceType, err.Error())
	}
	uploadID := res.UploadID

	// Upload part1.
	fiveMBBytes := bytes.Repeat([]byte("a"), 5*humanize.MiByte)
	md5Writer := md5.New()
	md5Writer.Write(fiveMBBytes)
	etag1 := hex.EncodeToString(md5Writer.Sum(nil))
	sha256sum := ""

		return ErrSignatureDoesNotMatch
	}
	return ErrNone
}

func calculateSignatureV2(stringToSign string, secret string) string {
	hm := hmac.New(sha1.New, []byte(secret))
	hm.Write([]byte(stringToSign))
	return base64.StdEncoding.EncodeToString(hm.Sum(nil))
}

// Return signature-v2 for the presigned request.

			return err
		}

		w := multiWriter{
			writers:     writers,
			writeQuorum: 1,
			errs:        make([]error, len(writers)),
		}

		if err = w.Write(ctx, bufs); err != nil {
			return err
		}
	}

	return derr

# 3. Add modifiers. Some modifiers for local execution are:
#      Ex. disk_cache -- Use a local cache
#      Ex. public_cache -- Use TF's public cache (read-only)
#      Ex. public_cache_push -- Use TF's public cache (read and write, Googlers only)
#      Ex. rbe        -- Use RBE for faster builds (Googlers only; see below)
#      Ex. no_docker  -- Disable docker on enabled platforms

                "        <iframe src=\"https://www.youtube.com/embed/$2&rel=0\" title=\"YouTube video player\"  \n" +
                "          frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" \n" +
                "          referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen> \n" +
                "        </iframe> \n" +