public function askConfirmation($question, $default = true)
	{
		/** @var QuestionHelper $helper */
		$helper = $this->_helperSet->get('question');
		$confirmation_question = new ConfirmationQuestion(
			'<question>' . $question . ' [' . ($default ? 'y' : 'n') . ']?</question> ',
			$default
		);

		return $helper->ask($this->_input, $this->_output, $confirmation_question);
	}