Entity classes are defined in exactly the same manner as in a vanilla CodeIgniter environment.
<?php namespace App\Entities;
use Swift\ORM\Entity;
class User extends Entity
{
protected $casts = [
'authdata' => 'json-array',
'preferences' => 'json-array'
];
}
<?php namespace App\Entities;
use Swift\ORM\Entity;
class Group extends Entity
{
}