Artisan ModelMakeCommand with Custom Models Directory

<?php

namespace App\Console\Commands;

use Illuminate\Foundation\Console\ModelMakeCommand as BaseModelMakeCommand;
use Symfony\Component\Console\Input\InputOption;

class ModelMakeCommand extends BaseModelMakeCommand
{
    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Create a new Eloquent model class (with optional directory)';

    /**
     * Sets the default directory for models.
     *
     * @var string
     */
    protected $defaultDirectory = 'Models';

    /**
     * Execute the console command.
     *
     * @return void
     */
    public function fire()
    {
        if ($this->option('dir'))
        {
            // concatenate the directory to the model's name
            $model = $this->option('dir') . '/' . $this->argument('name');
            $this->input->setArgument('name', $model);
        }
        
        parent::fire();
    }

    /**
     * Get the console command options.
     *
     * @return array
     */
    protected function getOptions()
    {
        return array_merge(
            [
                ['dir', 'd', InputOption::VALUE_OPTIONAL, 'Create the model in the given directory.', $this->defaultDirectory]
            ], parent::getOptions());
    }
}