Airship\Cabin\Bridge\Filter\Account\LoginFilter::__construct PHP Method

    public function __construct()
    {
        $this->addFilter('username', (new StringFilter())->addCallback([StringFilter::class, 'nonEmpty']))->addFilter('passphrase', (new StringFilter())->addCallback([StringFilter::class, 'nonEmpty']))->addFilter('two_factor', new StringFilter());
    }