### Async Context Manager

If you check, the function is decorated with an `@asynccontextmanager`.

That converts the function into something called an "**async context manager**".

{* ../../docs_src/events/tutorial003.py hl[1,13] *}

A **context manager** in Python is something that you can use in a `with` statement, for example, `open()` can be used as a context manager:

```Python

	return MockPortForwarder{}, nil
}

func (c MockClient) AllDiscoveryDo(_ context.Context, _, _ string) (map[string][]byte, error) {
	return c.Results, nil
}

func (c MockClient) EnvoyDo(ctx context.Context, podName, podNamespace, method, path string) ([]byte, error) {
	results, ok := c.Results[podName]
	if !ok {

	if t, ok := config.Tiers[tierName]; ok {
		return t.Type, true
	}
	return madmin.Unsupported, false
}

// Add adds tier to config if it passes all validations.
func (config *TierConfigMgr) Add(ctx context.Context, tier madmin.TierConfig, ignoreInUse bool) error {
	config.Lock()
	defer config.Unlock()

	// check if tier name is in all caps
	tierName := tier.Name
	if tierName != strings.ToUpper(tierName) {

pkg cmp, func Less[$0 Ordered]($0, $0) bool #59488
pkg cmp, type Ordered interface {} #59488
pkg context, func AfterFunc(Context, func()) func() bool #57928
pkg context, func WithDeadlineCause(Context, time.Time, error) (Context, CancelFunc) #56661
pkg context, func WithoutCancel(Context) Context #40221
pkg context, func WithTimeoutCause(Context, time.Duration, error) (Context, CancelFunc) #56661
pkg crypto/elliptic, func GenerateKey //deprecated #52221

package cmd

import (
	"context"
	"fmt"
	"io"
)

// Writes to multiple writers
type multiWriter struct {
	writers     []io.Writer
	writeQuorum int
	errs        []error
}

// Write writes data to writers.
func (p *multiWriter) Write(ctx context.Context, blocks [][]byte) error {
	for i := range p.writers {
		if p.errs[i] != nil {
			continue
		}

        return getPathForLocalArtifact(artifact);
    }

    public String getPathForLocalMetadata(Metadata metadata) {
        return getPath(metadata, "local");
    }

    public String getPathForRemoteMetadata(Metadata metadata, RemoteRepository repository, String context) {
        return getPath(metadata, getRepositoryKey(repository, context));
    }

    private static final Logger logger = LogManager.getLogger(FessBaseAction.class);

    /** The application type for FESs, e.g. used by access context. */
    protected static final String APP_TYPE = "FES"; // #change_it_first

    /** The user type for Admin, e.g. used by access context. */
    protected static final String USER_TYPE = "A";

    // ===================================================================================

	opts        TCPOptions
	listeners   []net.Listener    // underlying TCP listeners.
	acceptCh    chan acceptResult // channel where all TCP listeners write accepted connection.
	ctx         context.Context
	ctxCanceler context.CancelFunc
}

// start - starts separate goroutine for each TCP listener.  A valid new connection is passed to httpListener.acceptCh.
func (listener *httpListener) start() {

// StorageInfo - returns underlying storage statistics.
func (er erasureObjects) StorageInfo(ctx context.Context) StorageInfo {
	disks := er.getDisks()
	endpoints := er.getEndpoints()
	return getStorageInfo(disks, endpoints, true)
}

// LocalStorageInfo - returns underlying local storage statistics.
func (er erasureObjects) LocalStorageInfo(ctx context.Context, metrics bool) StorageInfo {
	disks := er.getDisks()
	endpoints := er.getEndpoints()

#include "tensorflow/c/eager/abstract_operation.h"

namespace tensorflow {

// Abstract interface to a context.
//
// This serves as a factory for creating `AbstractOperation`s and for
// registering traced functions.
// Operations creation within a context can only be executed in that context
// (for now at least).
// Implementations of the context may contain some state e.g. an execution
// environment, a traced representation etc.