ADLDAP2 for Laravel 5.2 - Binding user to model

This is my first time using ADLDAP & I've only done some Laravel work, so I'm getting confused.

The notes in the config file say this:

    /*
|--------------------------------------------------------------------------
| Bind User to Model
|--------------------------------------------------------------------------
|
| The bind user to model option allows you to access the Adldap user model
| instance on your laravel database model to be able run operations
| or retrieve extra attributes on the Adldap user model instance.
|
| If this option is true, you must insert the trait:
|
|   `Adldap\Laravel\Traits\AdldapUserModelTrait`
|
| Onto your User model configured in `config/auth.php`.
|
| Then use `Auth::user()->adldapUser` to access.
|
| This option must be true or false.
|
*/

My question is where/how do I add the Adldap\Laravel\Traits\AdldapUserModelTrait trait in the config/auth.php file?

via Chebli Mohamed