Der erste Teil der Funktion, vor dem `yield`, wird ausgeführt **bevor** die Anwendung startet.

Und der Teil nach `yield` wird ausgeführt, **nachdem** die Anwendung beendet ist.

### Asynchroner Kontextmanager { #async-context-manager }

Wie Sie sehen, ist die Funktion mit einem `@asynccontextmanager` versehen.

Dadurch wird die Funktion in einen sogenannten „**asynchronen Kontextmanager**“ umgewandelt.

	AmzServerSideEncryptionKmsID                 = AmzServerSideEncryption + "-Aws-Kms-Key-Id"
	AmzServerSideEncryptionKmsContext            = AmzServerSideEncryption + "-Context"
	AmzServerSideEncryptionCustomerAlgorithm     = AmzServerSideEncryption + "-Customer-Algorithm"
	AmzServerSideEncryptionCustomerKey           = AmzServerSideEncryption + "-Customer-Key"

([#62695](https://github.com/kubernetes/kubernetes/pull/62695), [@CaoShuFeng](https://github.com/CaoShuFeng))
* HTTP transport now uses `context.Context` to cancel dial operations. k8s.io/client-go/transport/Config struct has been updated to accept a function with a `context.Context` parameter. This is a breaking change if you use this field in your code. ([#60012](https://github.com/kubernetes/kubernetes/pull/60012), [@ash2k](https://github.com/ash2k))

    private CacheEntry<DfsReferralDataInternal> referrals = null;
    private final Object referralsLock = new Object();

    /**
     * Constructs a DFS resolver implementation
     *
     * @param tc the CIFS context containing configuration
     */
    public DfsImpl(final CIFSContext tc) {
    }

    private Map<String, Map<String, CacheEntry<DfsReferralDataInternal>>> getTrustedDomains(final CIFSContext tf) throws SmbAuthException {

import org.mockito.quality.Strictness;

import jcifs.CIFSContext;
import jcifs.NameServiceClient;
import jcifs.RuntimeCIFSException;
import jcifs.config.PropertyConfiguration;
import jcifs.context.BaseContext;
import jcifs.smb.NtlmPasswordAuthentication;

/**
 * Tests for the NtlmHttpURLConnection class.
 * This class uses Mockito to simulate the behavior of HttpURLConnection and other dependencies.
 */

			// to retry with 503 errors when server is coming up.
			return auth.Credentials{}, false, ErrIAMNotInitialized
		}

		// Check if the access key is part of users credentials.
		u, ok, err := globalIAMSys.CheckKey(r.Context(), accessKey)
		if err != nil {
			return auth.Credentials{}, false, ErrIAMNotInitialized
		}
		if !ok {
			// Credentials could be valid but disabled - return a different
			// error in such a scenario.

        assertFalse(Arrays.equals(derived1, derived2), "Different labels should produce different keys");
        assertFalse(Arrays.equals(derived1, derived3), "Different contexts should produce different keys");
    }

    @Test
    public void testStoreNullKey() {
        assertThrows(IllegalArgumentException.class, () -> keyManager.storeSessionKey("session", null, "AES"));
    }

        if (this.gssContext != null) {
            try {
                this.gssContext.dispose();
            } catch (GSSException e) {
                throw new SmbException("Context disposal failed", e);
            }
        }
    }

    /*
     * Prepare reflective access to ExtendedGSSContext. The reflective access

    <exportedPackage>org.codehaus.plexus.configuration</exportedPackage>
    <exportedPackage>org.codehaus.plexus.container</exportedPackage>
    <exportedPackage>org.codehaus.plexus.context</exportedPackage>
    <exportedPackage>org.codehaus.plexus.lifecycle</exportedPackage>
    <exportedPackage>org.codehaus.plexus.logging</exportedPackage>
    <exportedPackage>org.codehaus.plexus.personality</exportedPackage>

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