src/Console/QrCode.php
private static function initQrcodeStyle(OutputInterface $output)
    {
        $style = new OutputFormatterStyle('black', 'black', ['bold']);
        $output->getFormatter()->setStyle('blackc', $style);
        $style = new OutputFormatterStyle('white', 'white', ['bold']);
        $output->getFormatter()->setStyle('whitec', $style);
    }
private static function initQrcodeStyle(OutputInterface $output)
    {
        $style = new OutputFormatterStyle('black', 'black', ['bold']);
        $output->getFormatter()->setStyle('blackc', $style);
        $style = new OutputFormatterStyle('white', 'white', ['bold']);
        $output->getFormatter()->setStyle('whitec', $style);
    }
init qrCode style.

@param OutputInterface $output