ConfirmationTrait.php

<?php
/**
 * @file
 * Contains Drupal\AppConsole\Command\Helper\Confirmation.
 */

namespace Drupal\AppConsole\Command\Helper;

use Symfony\Component\Console\Helper\HelperInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Input\InputInterface;

trait ConfirmationTrait
{
    /**
     * @param InputInterface $input
     * @param OutputInterface $output
     * @param HelperInterface $dialog
     * @return mixed
     */
    public function confirmationQuestion(InputInterface $input, OutputInterface $output, HelperInterface $dialog)
    {
        if ($input->isInteractive()) {
            if (!$dialog->askConfirmation($output,
              $dialog->getQuestion($this->trans('commands.common.questions.confirm'), 'yes', '?'), true)
            ) {
                $output->writeln('<error>' . $this->trans('commands.common.messages.canceled') . '</error>');
                return true;
            }
            return false;
        }
        return false;
    }
}