Odoo - Inativar o Contato ao Inativar a empresa principal - onchange

@api.onchange('active')                                                     
     def active_partner(self):                                                   
         if not self.active:                                                     
             for child in self.child_ids:                                        
                 child.write({'active': False })                                 
         return {'value' : {}, }