I am new to coding and I am trying to extend \TCG\Voyager\Models\User and Authenticatable implements MustVerifyEmail together but I do not know how to do it.
I have tried class User extends \TCG\Voyager\Models\User, Authenticatable implements MustVerifyEmail together but that doesn't work for me. 
I have created 2 seperate classes and that does not let me either.
namespace App;
use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable implements MustVerifyEmail extends \TCG\Voyager\Models\User
{
    use Notifiable;
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'name', 'email', 'password',
    ];
    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];
    /**
     * The attributes that should be cast to native types.
     *
     * @var array
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
    ];
}
 
    