Google\Cloud\Tests\System\Datastore\DatastoreTestCase::setUpBeforeClass PHP Method

    public static function setUpBeforeClass()
    {
        if (self::$hasSetUp) {
            return;
        }
        $config = ['keyFilePath' => getenv('GOOGLE_CLOUD_PHP_TESTS_KEY_PATH'), 'namespaceId' => uniqid(self::TESTING_PREFIX)];
        self::$client = new DatastoreClient($config);
        self::$returnInt64AsObjectClient = new DatastoreClient($config + ['returnInt64AsObject' => true]);
        self::$hasSetUp = true;
    }