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_GetAccessPointPolicyStatusForObjectLambda.go
    path of file: ./repos/aws-sdk-go-v2/service/s3control
    
    the code of the file until where you have to start completion: // Code generated by smithy-go-codegen DO NOT EDIT.

package s3control

import (
	"context"
	"fmt"
	awsmiddleware "github.com/aws/aws-sdk-go-v2/aws/middleware"
	"gi
    
func backFillGetAccessPointPolicyStatusForObjectLambdaAccountID(input interface{}, v string) error {
	in := input.(*GetAccessPointPolicyStatusForObjectLambdaInput)
	if in.AccountId != nil {
		if !strings.EqualFold(*in.AccountId, v) {
			return fmt.Errorf("error backfilling account id")
		}
		return nil
	}
	in.AccountId = &v
	return nil
}