Bugs in examples for group_expand in odoo ORM API

[holasoftware]

In the documentation of the odoo ORM API:

https://www.odoo.com/documentation/18.0/developer/reference/backend/orm.html

In the examples for group_expand field attribute the functions are accepting an order keyword parameter:

@api.model
def _read_group_selection_field(self, values, domain, order):
    return ['choice1', 'choice2', ...] # available selection choices.

@api.model
def _read_group_many2one_field(self, records, domain, order):
    return records + self.search([custom_domain])

But this keyword parameter order is not used anymore internally. I was checking this file inside thr source code:

odoo/models.py

And this function there:

_read_group_fill_results

In that function, the group_expand method of the odoo model is never called with the order parameter.