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: import.go
    path of file: ./repos/faasd/vendor/github.com/Microsoft/hcsshim/computestorage
    
    the code of the file until where you have to start completion: //go:build windows

package computestorage

import (
	"context"
	"encoding/json"

	"github.com/Microsoft/hcsshim/internal/oc"
	"github.com/pkg
    
func ImportLayer(ctx context.Context, layerPath, sourceFolderPath string, layerData LayerData) (err error) {
	title := "hcsshim::ImportLayer"
	ctx, span := oc.StartSpan(ctx, title) //nolint:ineffassign,staticcheck
	defer span.End()
	defer func() { oc.SetSpanStatus(span, err) }()
	span.AddAttributes(
		trace.StringAttribute("layerPath", layerPath),
		trace.StringAttribute("sourceFolderPath", sourceFolderPath),
	)

	bytes, err := json.Marshal(layerData)
	if err != nil {
		return err
	}

	err = hcsImportLayer(layerPath, sourceFolderPath, string(bytes))
	if err != nil {
		return errors.Wrap(err, "failed to import layer")
	}
	return nil
}