To use this functionality you need to return following action with list
of actions to execute:

``` python
def foo(self):
   self.ensure_one()
   return {
      'type': 'ir.actions.act_multi',
      'actions': [
          {'type': 'ir.actions.act_window_close'},
          {'type': 'ir.actions.client', 'tag': 'reload'},
      ]
   }
```
