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: create_image_no_block_device.go
    path of file: ./repos/aws-doc-sdk-examples/go/example_code/ec2
    
    the code of the file until where you have to start completion: // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0

package main

import (
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/ec2"

	"fmt"
)

func main() {
	// Load session from shared config
	sess := session.Must(session.NewSessionWithOptions(session.Options{
		SharedConfigState: session.SharedConfigEnable,
	}))

	// Create EC2 service client
	svc := ec2.New(sess)

	opts := &ec2.CreateImageInput{
		Description: aws.String("image description"),
		InstanceId:  aws.String("i-abcdef12"),
		Name:        aws.String("image name"),
		BlockDeviceMappings: []*ec2.Block
    
func main() {
	// Load session from shared config
	sess := session.Must(session.NewSessionWithOptions(session.Options{
		SharedConfigState: session.SharedConfigEnable,
	}))

	// Create EC2 service client
	svc := ec2.New(sess)

	opts := &ec2.CreateImageInput{
		Description: aws.String("image description"),
		InstanceId:  aws.String("i-abcdef12"),
		Name:        aws.String("image name"),
		BlockDeviceMappings: []*ec2.BlockDeviceMapping{
			{
				DeviceName: aws.String("/dev/sda1"),
				NoDevice:   aws.String(""),
			},
			{
				DeviceName: aws.String("/dev/sdb"),
				NoDevice:   aws.String(""),
			},
			{
				DeviceName: aws.String("/dev/sdc"),
				NoDevice:   aws.String(""),
			},
		},
	}
	resp, err := svc.CreateImage(opts)
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Println("ID: ", resp.ImageId)
}