// initialize the object layer.
	defer setObjectLayer(z)

	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	attempt := 1
	for {
		var err error
		bootstrapTrace(fmt.Sprintf("poolMeta.Init: loading pool metadata, attempt: %d", attempt), func() {
			err = z.Init(ctx) // Initializes all pools.
		})
		if err != nil {
			if !configRetriableErrors(err) {
				logger.Fatal(err, "Unable to initialize backend")
			}

      - tutorial/security/oauth2-jwt.md
    - tutorial/middleware.md
    - tutorial/cors.md
    - tutorial/sql-databases.md
    - tutorial/bigger-applications.md
    - tutorial/background-tasks.md
    - tutorial/metadata.md
    - tutorial/static-files.md
    - tutorial/testing.md
    - tutorial/debugging.md
  - Advanced User Guide:
    - advanced/index.md
    - advanced/path-operation-advanced-configuration.md

                """
            ),
        ] = None,
        openapi_extra: Annotated[
            Optional[Dict[str, Any]],
            Doc(
                """
                Extra metadata to be included in the OpenAPI schema for this *path
                operation*.

                Read more about it in the

	AmzCopySource                 = "X-Amz-Copy-Source"
	AmzCopySourceVersionID        = "X-Amz-Copy-Source-Version-Id"
	AmzCopySourceRange            = "X-Amz-Copy-Source-Range"
	AmzMetadataDirective          = "X-Amz-Metadata-Directive"
	AmzObjectLockMode             = "X-Amz-Object-Lock-Mode"
	AmzObjectLockRetainUntilDate  = "X-Amz-Object-Lock-Retain-Until-Date"
	AmzObjectLockLegalHold        = "X-Amz-Object-Lock-Legal-Hold"

		13: {bucketName: bucket, objName: object, inputData: []byte("mnop"), inputMeta: map[string]string{"etag": "e132e96a5ddad6da8b07bba6f6131fef"}, inputDataSize: int64(len("mnop"))},

		// With no metadata
		14: {bucketName: bucket, objName: object, inputData: data, inputDataSize: int64(len(data)), expectedMd5: getMD5Hash(data)},

///

```Python hl_lines="27"
{!> ../../docs_src/body_multiple_params/tutorial004.py!}
```

////

/// info

`Body` hat die gleichen zusätzlichen Validierungs- und Metadaten-Parameter wie `Query` und `Path` und andere, die Sie später kennenlernen.

///

## Einen einzelnen Body-Parameter einbetten

func Test_metaCacheEntries_merge(t *testing.T) {
	org := loadMetacacheSampleEntries(t)
	a, b := org.shallowClone(), org.shallowClone()
	be := b.entries()
	for i := range be {
		//  Modify b so it isn't deduplicated.
		be[i].metadata = []byte("something-else")
	}
	// Merge b into a
	a.merge(b, -1)
	//nolint:gocritic
	want := append(loadMetacacheSampleNames, loadMetacacheSampleNames...)
	sort.Strings(want)
	got := a.entries().names()

* Metadata Agent Improvements ([#66485](https://github.com/kubernetes/kubernetes/pull/66485), [@bmoyles0117](https://github.com/bmoyles0117))
    * Bump metadata agent version to 0.2-0.0.21-1.
    * Expand the metadata agent's access to all API groups.
    * Remove metadata agent config maps in favor of command line flags.
    * Update the metadata agent's liveness probe to a new /healthz handler.

import org.junit.Test


class UpgradedPropertiesChangesTest : AbstractBinaryCompatibilityTest() {

    @Test
    fun `should report binary incompatibility for upgraded property without any metadata`() {
        checkNotBinaryCompatible(
            v1 = {
                withFile(
                    "java/com/example/Task.java",
                    """
                        package com.example;

	// Compress adjacent spaces (a space is determined by
	// unicode.IsSpace() internally here) to one space and return
	return strings.Join(strings.Fields(input), " ")
}

// checkMetaHeaders will check if the metadata from header/url is the same with the one from signed headers
func checkMetaHeaders(signedHeadersMap http.Header, r *http.Request) APIErrorCode {
	// check values from http header
	for k, val := range r.Header {