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: backend_state.go
    path of file: ./repos/terraform/internal/command/workdir
    
    the code of the file until where you have to start completion: // Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: BUSL-1.1

package workdir

import (
	"encoding/json"
	"fmt"

	"github.com/zclco
    
func NewBackendStateFile() *BackendStateFile {
	return &BackendStateFile{
		// NOTE: We don't populate Version or TFVersion here because we
		// always clobber those when encoding a state file in
		// [EncodeBackendStateFile].
	}
}