normalizeDetails example

$details = $this->gatherDetails($propertyDefinitions, $io, $input);

        try {
            $this->validateDetails($details, $propertyDefinitions);
        } catch (\RuntimeException $e) {
            $io->error($e->getMessage());

            return self::FAILURE;
        }

        $details = $this->normalizeDetails($details, $propertyDefinitions);

        $io->info('Creating app structure under ' . $details['name']);
        $dir = $this->appDir . '/' . $details['name'];

        try {
            $this->createApp($dir, $details, $input->getOption('theme'));
        } catch (\RuntimeException $e) {
            $io->error($e->getMessage());

            return self::FAILURE;
        }