DefaultProfileActivationContext context = new DefaultProfileActivationContext();
        return context.setUserProperties(userProperties).setSystemProperties(systemProperties);
    }

    protected void assertActivation(boolean active, Profile profile, ProfileActivationContext context) {
        SimpleProblemCollector problems = new SimpleProblemCollector();

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"os"
	"testing"

	"github.com/minio/minio/internal/config"
)

func TestServerConfig(t *testing.T) {
	ctx, cancel := context.WithCancel(t.Context())
	defer cancel()

	objLayer, fsDir, err := prepareFS(ctx)
	if err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(fsDir)

		"Time elapsed (in seconds) since last scan activity.")
)

// loadClusterScannerMetrics - `MetricsLoaderFn` for cluster webhook
// such as failed objects and directories scanned.
func loadClusterScannerMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
	m.Set(scannerBucketScansFinished, float64(globalScannerMetrics.lifetime(scannerMetricScanBucketDrive)))

	memAvailableMD = NewGaugeMD(memAvailable, "Available memory on the node")
)

// loadMemoryMetrics - `MetricsLoaderFn` for node memory metrics.
func loadMemoryMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
	memMetrics, err := c.memoryMetrics.Get()
	if err != nil {
		metricsLogIf(ctx, err)
		return err
	}

	m.Set(memTotal, float64(memMetrics.Total))

* 在返回模板的*路径操作*中声明 `Request` 参数
* 使用 `templates` 渲染并返回 `TemplateResponse`，传递模板的名称、request 对象以及一个包含多个键值对（用于 Jinja2 模板）的 "context" 字典。

{* ../../docs_src/templates/tutorial001_py310.py hl[4,11,15:18] *}

/// note | 注意

在 FastAPI 0.108.0，Starlette 0.29.0 之前，`name` 是第一个参数。
并且，在此之前，`request` 对象是作为 context 的一部分以键值对的形式传递的。

///

/// tip | 提示

通过声明 `response_class=HTMLResponse`，API 文档就能识别响应的对象是 HTML。

///

// httpListener is capable to
// * listen to multiple addresses
// * controls incoming connections only doing HTTP protocol
func newHTTPListener(ctx context.Context, serverAddrs []string, opts TCPOptions) (listener *httpListener, listenErrs []error) {
	listeners := make([]net.Listener, 0, len(serverAddrs))
	listenErrs = make([]error, len(serverAddrs))

	if opts.Trace == nil {

type EventNotifier struct {
	sync.RWMutex
	targetList     *event.TargetList
	bucketRulesMap map[string]event.RulesMap
}

// NewEventNotifier - creates new event notification object.
func NewEventNotifier(ctx context.Context) *EventNotifier {
	// targetList/bucketRulesMap/bucketRemoteTargetRulesMap are populated by NotificationSys.InitBucketTargets()
	return &EventNotifier{
		targetList:     event.NewTargetList(ctx),

		o.args.RoleARN: o.args.RolePolicy,
	}
}

// checkConnectivity returns true if we are able to connect to the plugin
// service.
func (o *AuthNPlugin) checkConnectivity(ctx context.Context) bool {
	ctx, cancel := context.WithTimeout(ctx, healthCheckTimeout)
	defer cancel()
	u := url.URL(*o.args.URL)

	req, err := http.NewRequestWithContext(ctx, http.MethodHead, u.String(), nil)
	if err != nil {

	api.listObjectsV2Handler(ctx, w, r, false)
}

// listObjectsV2Handler performs listing either with or without extra metadata.
func (api objectAPIHandlers) listObjectsV2Handler(ctx context.Context, w http.ResponseWriter, r *http.Request, metadata bool) {
	defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))

	vars := mux.Vars(r)
	bucket := vars["bucket"]

	objectAPI := api.ObjectAPI()

     * @param sessionKey
     * @param label
     * @param context
     */
    private static byte[] derive(final byte[] sessionKey, final byte[] label, final byte[] context) {
        final KDFCounterBytesGenerator gen = new KDFCounterBytesGenerator(new HMac(new SHA256Digest()));

        final int r = 32;
        final byte[] suffix = new byte[label.length + context.length + 5];
        // per bouncycastle