packages/attest/ concretecmsで、contentimporterを使って属性と属性セットを登録できるかどうか

controller.php

<?php
namespace Concrete\Package\Attest;

use Concrete\Core\Package\Package;
use Concrete\Core\Backup\ContentImporter;
use Concrete\Core\Cache\Cache;

defined('C5_EXECUTE') or die("Access Denied.");

class Controller extends Package {

    protected $pkgHandle = 'attest';
    protected $appVersionRequired = '8.5';
    protected $pkgVersion = '0.9';

    public function getPackageName() {
        return t("attest");
    }
  
    public function getPackageDescription() {
        return t("attest");
    }

    public function install() {
	          $pkg = parent::install();
	          Cache::disableAll();
		  $ci = new ContentImporter();
		  $ci->importContentFile($pkg->getPackagePath() . '/import.xml');
	  }
}

imort.xml

<?xml version="1.0"?>
<concrete5-cif version="1.0">
    <attributekeys>
        <attributekey handle="attsample1" name="属性1" package="" searchable="1" indexed="1" type="number" category="collection" />
    </attributekeys>
    <attributesets>
        <attributeset name="サンプル属性" package="" handle="att1" category="collection">
            <attributekey handle="attsample1" />
        </attributeset>
    </attributesets>
</concrete5-cif>

インポート直前に、キャッシュ無効化 Cache::disableAll(); を追加した