controller.php

<?php
/**
 * Created by Pure/Web
 * www.pure-web.ru
 * © 2017
 */

namespace Concrete\Package\PureAccordion;
use Concrete\Core\Package\Package as PackageInstaller;
use Concrete\Core\Block\BlockType\BlockType;

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

class Controller extends PackageInstaller {

	protected $pkgHandle = 'pure_accordion';
	protected $appVersionRequired = '8.1.0';
	protected $pkgVersion = '0.9.2';

    public function getPackageName() {
		return t("Pure Accordion");
	}

	public function getPackageDescription() {
		return t("Pure Accordion a simple accordion with permalinks.");
	}

    public function install() {
        /** @var $pkg \Concrete\Core\Entity\Package() */
        $pkg = parent::install(); //parent is \Concrete\Core\Package\Package

        $blockType = BlockType::getByHandle($this->pkgHandle);
        if (!is_object($blockType)) {
            BlockType::installBlockType($this->pkgHandle, $pkg);
        }
	}

}