Example of usage in an odoo shell, when a screen is open:
>>> self.env['vertical.lift.shuttle'].browse(1)._operation_for_mode().operation_descr = 'foo'
>>> self.env['vertical.lift.shuttle'].browse(1)._send_notification_refresh()
>>> env.cr.commit()
Provided the longpolling is correctly configured with a proxy, the
screen should immediately refresh with 'foo' as operation description.