protected function configure()
    {
        parent::configure();

        $this
            ->setName(self::COMMAND_NAME)
            ->setAliases(array('kaliop:migration:update'))
            ->setDescription('Execute available migration definitions.')
            // nb: when adding options, remember to forward them to sub-commands executed in 'separate-process' mode
            ->addOption('admin-login', 'a', InputOption::VALUE_REQUIRED, "Login of admin account used whenever elevated privileges are needed (user id 14 used by default)")
            ->addOption('clear-cache', 'c', InputOption::VALUE_NONE, "Clear the cache after the command finishes")
            ->addOption('default-language', 'l', InputOption::VALUE_REQUIRED, "Default language code that will be used if no language is provided in migration steps")
            ->addOption('force', 'f', InputOption::VALUE_NONE, "Force (re)execution of migrations already DONE, SKIPPED or FAILED. Use with great care!")
            ->addOption('ignore-failures', 'i', InputOption::VALUE_NONE, "Keep executing migrations even if one fails")
            ->addOption('no-interaction', 'n', InputOption::VALUE_NONE, "Do not ask any interactive question")
            ->addOption('no-transactions', 'u', InputOption::VALUE_NONE, "Do not use a repository transaction to wrap each migration. Unsafe, but needed for legacy slot handlers")
            ->addOption('path', null, InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, "The directory or file to load the migration definitions from")
            ->addOption('separate-process', 'p', InputOption::VALUE_NONE, "Use a separate php process to run each migration. Safe if your migration leak memory. A tad slower")
            ->addOption('force-sigchild-enabled', null, InputOption::VALUE_NONE, "When using a separate php process to run each migration, tell Symfony that php was compiled with --enable-sigchild option")
            ->addOption('survive-disconnected-tty', null, InputOption::VALUE_NONE, "Keep on executing migrations even if the tty where output is written to gets removed. Useful if you run the command over an unstable ssh connection")
            ->addOption('child', null, InputOption::VALUE_NONE, "*DO NOT USE* Internal option for when forking separate processes")
            ->setHelp(<<<EOT
The <info>kaliop:migration:migrate</info> command loads and executes migrations:

    <info>./ezpublish/console kaliop:migration:migrate</info>

You can optionally specify the path to migration definitions with <info>--path</info>:

    <info>./ezpublish/console kaliop:migrations:migrate --path=/path/to/bundle/version_directory --path=/path/to/bundle/version_directory/single_migration_file</info>
EOT
            );
    }