protected function showCommandHelp($commandName)
    {
        $command = $this->app->getCommand($commandName);

        if (!$command) {
            $this->output->writeln("<red>Unknown command:</red> {$commandName}");
            return;
        }

        if ($command->getDescription()) {
            $this->output->writeln("<yellow>Description:</yellow>");
            $this->output->writeln("  {$command->getDescription()}");
            $this->output->newline();
        }

        $this->output->writeln("<yellow>Usage:</yellow>");
        $this->output->writeln("  {$command->getUsage()}");
    }