Command/CliCommand.php
protected function askQuestions(InputInterface $input, OutputInterface $output)
    {
        foreach ($this->questions as $question) {
            if (!$question->ask($input, $output)) {
                return static::RETURN_ERROR;
            }
        }

        return static::RETURN_SUCCESS;
    }
protected function askQuestions(InputInterface $input, OutputInterface $output)
    {
        foreach ($this->questions as $question) {
            if (!$question->ask($input, $output)) {
                return static::RETURN_ERROR;
            }
        }

        return static::RETURN_SUCCESS;
    }
Ask question before executing command.

@param InputInterface  $input
Input.
@param OutputInterface $output
Output.

@return boolean
True if passes all questions. Otherwise false.