Yii2 custom gii generator and template?

I just implementing a new gii generator for my requirement on yii2. i want to know best place to keep those codes?

Create app\modules\gii directory with own Generator class, views, templates.

namespace app\modules\gii;

class MyCustomGenerator extends \yii\gii\generators\crud\Generator
{
    // ...

    public function generate()
    {
        // ...
    }
}

Then enable it in gii configuration.

[
    // ...
    'modules' => [
        'gii' => [
            'class'      => 'yii\gii\Module',
            'generators' => [
                'class' => '\app\modules\gii\MyCustomGenerator',
                'model' => ['class' => '\app\modules\gii\model\MyCustomGenerator'],
            ],
        ],
    ],
]