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: list_project_assets_at_time.go
    path of file: ./repos/golang-samples/securitycenter/assets
    
    the code of the file until where you have to start completion: // Copyright 2019 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unle
    
func listAllProjectAssetsAtTime(w io.Writer, orgID string, asOf time.Time) error {
	// orgID := "12321311"
	// Instantiate a context and a security service client to make API calls.
	ctx := context.Background()
	client, err := securitycenter.NewClient(ctx)
	if err != nil {
		return fmt.Errorf("securitycenter.NewClient: %w", err)
	}
	defer client.Close() // Closing the client safely cleans up background resources.

	// Convert the time to a Timestamp protobuf
	readTime, err := ptypes.TimestampProto(asOf)
	if err != nil {
		return fmt.Errorf("TimestampProto(%v): %w", asOf, err)
	}

	// You can also list assets in a project/ folder. To do so, modify the parent and
	// filter condition.
	req := &securitycenterpb.ListAssetsRequest{
		// Parent must be in one of the following formats:
		//		"organizations/{orgId}"
		//		"projects/{projectId}"
		//		"folders/{folderId}"
		Parent:   fmt.Sprintf("organizations/%s", orgID),
		Filter:   `security_center_properties.resource_type="google.cloud.resourcemanager.Project"`,
		ReadTime: readTime,
	}

	assetsFound := 0
	it := client.ListAssets(ctx, req)
	for {
		result, err := it.Next()
		if err == iterator.Done {
			break
		}
		if err != nil {
			return fmt.Errorf("ListAssets: %w", err)
		}
		asset := result.Asset
		properties := asset.SecurityCenterProperties
		fmt.Fprintf(w, "Asset Name: %s,", asset.Name)
		fmt.Fprintf(w, "Resource Name %s,", properties.ResourceName)
		fmt.Fprintf(w, "Resource Type %s\n", properties.ResourceType)
		assetsFound++
	}
	return nil
}