GArray *event_ids;
GError *error;

error = NULL;
zeitgeist_log_insert_events_finish (log, res, &error);
event_ids = g_async_result_get_user_data (res);
if (error)
  {
    g_critical ("Failed to insert events: %s", error->message);
    g_error_free (error);
    return;
  }
g_assert_cmpint (expected_events->len, ==, event_ids->len);
printf("======> %u\n", g_array_index (event_ids, int, 0));