CraffftContaoOAuth2Bundle.php

<?php

/*
 * This file is part of the Craffft OAuth2 Bundle.
 *
 * (c) Daniel Kiesel <https://github.com/iCodr8>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Craffft\ContaoOAuth2Bundle;

use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
use Symfony\Component\HttpKernel\Bundle\Bundle;

class CraffftContaoOAuth2Bundle extends Bundle
{
    public function getContainerExtension()
    {
        if (null === $this->extension) {
            $extension = $this->createContainerExtension();

            if (null !== $extension) {
                if (!$extension instanceof ExtensionInterface) {
                    throw new \LogicException(sprintf('Extension %s must implement Symfony\Component\DependencyInjection\Extension\ExtensionInterface.', get_class($extension)));
                }

                $this->extension = $extension;
            } else {
                $this->extension = false;
            }
        }

        if ($this->extension) {
            return $this->extension;
        }
    }
}