```java
import jcifs.CIFSContext;
import jcifs.context.BaseContext;
import jcifs.smb.NtlmPasswordAuthenticator;

// Create context with credentials
CIFSContext context = new BaseContext(new jcifs.config.PropertyConfiguration());
NtlmPasswordAuthenticator auth = new NtlmPasswordAuthenticator("domain", "username", "password");
CIFSContext authContext = context.withCredentials(auth);

// Use authenticated context

        assertFalse(context.hasDefaultCredentials());
    }

    @Test
    void testHasDefaultCredentials_withNull() {
        context = new TestAbstractCIFSContext(null); // Test with null credentials
        assertFalse(context.hasDefaultCredentials());
    }

    @Test
    void testRenewCredentials() {
        assertFalse(context.renewCredentials("someLocation", new Exception("someError")));
    }

    @Test

    /**
     * Create an SSP context for authentication.
     * @param tc the CIFS context
     * @param targetDomain the target domain for authentication
     * @param host the target host
     * @param initialToken initial authentication token, if any
     * @param doSigning whether message signing should be enabled
     * @return a new SSP authentication context
     * @throws SmbException if context creation fails

// specific error.
func toAdminAPIErrCode(ctx context.Context, err error) APIErrorCode {
	if errors.Is(err, errErasureWriteQuorum) {
		return ErrAdminConfigNoQuorum
	}
	return toAPIErrorCode(ctx, err)
}

// wraps export error for more context
func exportError(ctx context.Context, err error, fname, entity string) APIError {
	if entity == "" {

## Context Managers { #context-managers }

### Qué son los "Context Managers" { #what-are-context-managers }

Los "Context Managers" son aquellos objetos de Python que puedes usar en una declaración `with`.

	health       *diskHealthTracker
	healthCheck  bool

	metricsCache *cachevalue.Cache[DiskMetrics]
	diskCtx      context.Context
	diskCancel   context.CancelFunc
}

func (p *xlStorageDiskIDCheck) getMetrics() DiskMetrics {
	p.metricsCache.InitOnce(5*time.Second,
		cachevalue.Opts{},
		func(ctx context.Context) (DiskMetrics, error) {
			diskMetric := DiskMetrics{
				LastMinute: make(map[string]AccElem, len(p.apiLatencies)),

def run(playwright: Playwright) -> None:
    browser = playwright.chromium.launch(headless=False)
    # Update the viewport manually
    context = browser.new_context(viewport={"width": 960, "height": 1080})
    page = context.new_page()
    page.goto("http://localhost:8000/docs")
    page.get_by_role("button", name="Item", exact=True).click()
    page.set_viewport_size({"width": 960, "height": 700})

// and the KMS context on success.
func (ssekms) ParseHTTP(h http.Header) (string, kms.Context, error) {
	if h == nil {
		return "", nil, ErrInvalidEncryptionMethod
	}

	algorithm := h.Get(xhttp.AmzServerSideEncryption)
	if algorithm != xhttp.AmzEncryptionKMS {
		return "", nil, ErrInvalidEncryptionMethod
	}

	var ctx kms.Context
	if context, ok := h[xhttp.AmzServerSideEncryptionKmsContext]; ok {

    /**
     * Context flag for sequence checking capability
     */
    public static final int SEQUENCE_CHECKING = 0x10;
    /**
     * Context flag for anonymity capability
     */
    public static final int ANONYMITY = 0x08;
    /**
     * Context flag for confidentiality (encryption) capability
     */
    public static final int CONFIDENTIALITY = 0x04;
    /**
     * Context flag for integrity (signing) capability
     */

            @Override
            public boolean isActive(Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
                throw new RuntimeException("BOOM");
            }

            @Override
            public boolean presentInConfig(
                    Profile profile, ProfileActivationContext context, ModelProblemCollector problems) {
                return true;
            }
        });