Stecman\Component\Symfony\Console\BashCompletion\CompletionCommand::configure PHP Метод

    protected function configure()
    {
        $this->setName('_completion')->setDefinition($this->createDefinition())->setDescription('BASH completion hook.')->setHelp(<<<END
To enable BASH completion, run:

    <comment>eval `[program] _completion -g`</comment>.

Or for an alias:

    <comment>eval `[program] _completion -g -p [alias]`</comment>.

END
);
    }