protected function publishItems($publishableItems)
    {
        $published = false;

        foreach($publishableItems as $source => $destination) {

            $destination = Str::path($destination);

            if(! $this->filesystem->exists($destination)) {
                $this->filesystem->create(
                    $destination,
                    $this->filesystem->get($source)
                );

                $published = true;
            }
        }

        return $published;
    }