public function askConfirmation($text, InputInterface $input = null)
{
if ($this->dialogHelper instanceof QuestionHelper) {
if (!$input) {
throw new \InvalidArgumentException('With symfony 3, the input stream may not be null');
}
return $this->dialogHelper->ask($input, $this, new ConfirmationQuestion($text));
}
if ($this->dialogHelper instanceof DialogHelper) {
return $this->dialogHelper->askConfirmation($this, $text);
}
throw new \RuntimeException("Invalid dialogHelper");
}
