'Update event on google calendar
:param instance_id : new google cal identifier
:param event_ori_google_id : origin google cal identifier
:param event_new : record of calendar.event to modify'

def update_recurrent_event_exclu(self, instance_id, event_ori_google_id, event_new):

    data = self.generate_data(event_new)
    url = ('/calendar/v3/calendars/%s/events/%s?access_token=%s' % ('primary', instance_id, self.get_token()))
    headers = {'Content-type': 'application/json'}
    data.update(recurringEventId=event_ori_google_id, originalStartTime=event_new.recurrent_id_date, sequence=self.get_sequence(instance_id))
    data_json = json.dumps(data)
    return self.env['google.service']._do_request(url, data_json, headers, type='PUT')
