think\console\output\Ask::doAsk PHP Метод

    protected function doAsk()
    {
        $this->writePrompt();
        $inputStream = STDIN;
        $autocomplete = $this->question->getAutocompleterValues();
        if (null === $autocomplete || !$this->hasSttyAvailable()) {
            $ret = false;
            if ($this->question->isHidden()) {
                try {
                    $ret = trim($this->getHiddenResponse($inputStream));
                } catch (\RuntimeException $e) {
                    if (!$this->question->isHiddenFallback()) {
                        throw $e;
                    }
                }
            }
            if (false === $ret) {
                $ret = fgets($inputStream, 4096);
                if (false === $ret) {
                    throw new \RuntimeException('Aborted');
                }
                $ret = trim($ret);
            }
        } else {
            $ret = trim($this->autocomplete($inputStream));
        }
        $ret = strlen($ret) > 0 ? $ret : $this->question->getDefault();
        if ($normalizer = $this->question->getNormalizer()) {
            return $normalizer($ret);
        }
        return $ret;
    }