/**
     * {@inheritdoc}
     */
    protected function configure()
    {
        parent::configure();
        $this->addOption('session', null, InputOption::VALUE_OPTIONAL, 'The document manager to use for this command.', null)->setHelp($this->getHelp() . <<<EOT

If you are using multiple document managers you can pick your choice with the
<info>--session</info> option:

<info>php app/console doctrine:phpcr:document:convert-translation --session=default</info>
EOT
);
    }