You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: example_publish_topic_test.go
    path of file: ./repos/azure-sdk-for-go/sdk/messaging/azeventgrid/publisher
    
    the code of the file until where you have to start completion: //go:build go1.18
// +build go1.18

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

package publisher_test

import (
	"context"
	"fmt"
	"log"
	"os"
	"time"

	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
	"github.com/Azure/azure-sdk-for-go/sdk/azcore/messaging"
	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
	"github.com/Azure/azure-sdk-for-go/sdk/messaging/azeventgrid/publisher"
)

// PublishEvents publishes events using the EventGrid schema to a topic. The
// topic must be configured to use the EventGrid schema or this will fail.
func ExampleClient_PublishEvents() {
	// ex: https://<topic-name>.<region>.eventgrid.azure.net/api/events
	endpoint := os.Getenv("EVENTGRID_TOPIC_ENDPOINT")
	key := os.Getenv("EVENTGRID_TOPIC_KEY")

	if endpoint == "" || key == "" {
		fmt.Fprintf(os.Stderr, "Skipping example, environment variables missing\n")
		return
	}

	// Other authentication methods:
	// - publisher.NewClient(): authenticate using a TokenCredential
    
func ExampleClient_PublishEvents() {
	// ex: https://<topic-name>.<region>.eventgrid.azure.net/api/events
	endpoint := os.Getenv("EVENTGRID_TOPIC_ENDPOINT")
	key := os.Getenv("EVENTGRID_TOPIC_KEY")

	if endpoint == "" || key == "" {
		fmt.Fprintf(os.Stderr, "Skipping example, environment variables missing\n")
		return
	}

	// Other authentication methods:
	// - publisher.NewClient(): authenticate using a TokenCredential from azidentity.
	// - publisher.NewClientWithSAS(): authenticate using a SAS token.
	client, err := publisher.NewClientWithSharedKeyCredential(endpoint, azcore.NewKeyCredential(key), nil)

	if err != nil {
		//  TODO: Update the following line with your application specific error handling logic
		log.Fatalf("ERROR: %s", err)
	}

	events := []publisher.Event{
		{
			Data:        "data for this event",
			DataVersion: to.Ptr("1.0"),
			EventType:   to.Ptr("event-type"),
			EventTime:   to.Ptr(time.Now()),
			ID:          to.Ptr("unique-id"),
			Subject:     to.Ptr("subject"),
		},
	}

	_, err = client.PublishEvents(context.TODO(), events, nil)

	if err != nil {
		//  TODO: Update the following line with your application specific error handling logic
		log.Fatalf("ERROR: %s", err)
	}

	// Output:
}