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: api_op_GetInstanceIdentityDocument.go
    path of file: ./repos/teller/vendor/github.com/aws/aws-sdk-go-v2/feature/ec2/imds
    
    the code of the file until where you have to start completion: package imds

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"time"

	"github.com/aws/smithy-go"
	smithyio "github.com/aws/smithy-go/io"
	"github.com/aws/smithy-go/middleware"
	smithyhttp "github.com/aws/smithy
    
func buildGetInstanceIdentityDocumentOutput(resp *smithyhttp.Response) (v interface{}, err error) {
	defer func() {
		closeErr := resp.Body.Close()
		if err == nil {
			err = closeErr
		} else if closeErr != nil {
			err = fmt.Errorf("response body close error: %v, original error: %w", closeErr, err)
		}
	}()

	var buff [1024]byte
	ringBuffer := smithyio.NewRingBuffer(buff[:])
	body := io.TeeReader(resp.Body, ringBuffer)

	output := &GetInstanceIdentityDocumentOutput{}
	if err = json.NewDecoder(body).Decode(&output.InstanceIdentityDocument); err != nil {
		return nil, &smithy.DeserializationError{
			Err:      fmt.Errorf("failed to decode instance identity document, %w", err),
			Snapshot: ringBuffer.Bytes(),
		}
	}

	return output, nil
}