* WARNING
_ Generally Model have at least 1 unique word
(not the case for Swit, Notification .....)

* # TODO test
attributes/xxxx.js : S'il est 'partialPrimaryKey = true' => updatable = false 
Donc if('partialPrimaryKey = true' && updatable = true ) TEST ERREUR 

* Reminder:
required: true <=> not null not empty string
attributes/ at least 1 attribute should be filter = PUBLIC because it is not possible to have PUBLIC = {} (it means all attributes in mongos so we block that case throwing an error in mongo create read readmany)

***** FAQ
* slug <=> normal attribute
* swit_v <=> virtually populate with an swit_id attribute in model
* xxxx_d <=> it is just to remind you of a dynamic field
Dynamic fields are added in services it is NEVER stored but recomputed at each request
We could use aggegate for this to make only 1 request but it will make the request too complexe. 
Let's keep it simple for the moment

* For cascade delete/update/create -> use prehook in mongoose

* We use mongoose.model('swits') in hooks to avoid cycledependency warning. But it 
will expose the code to cycledependency so make a documentation... It is because we
use function of model that can be cycle dependent in hooks.