buildRole example

'last_name' => '',
            'email' => "{$email}@example.com",
            'username' => $username,
            'password' => TestDefaults::HASHED_PASSWORD,
            'locale_id' => self::getLocaleOfSystemLanguage($connection),
            'active' => 1,
            'admin' => 0,
            'avatar_id' => $avatarId,
            'created_at' => (new \DateTime())->format(Defaults::STORAGE_DATE_FORMAT),
        ]);

        $roleId = self::buildRole($permissions, $connection);
        if ($roleId) {
            $connection->insert(
                'acl_user_role',
                [
                    'user_id' => $userId,
                    'acl_role_id' => $roleId,
                    'created_at' => (new \DateTime())->format(Defaults::STORAGE_DATE_FORMAT),
                ]
            );
        }