[1].title, 'Foo');
    assert.strictEqual(wf2vsg[1].getSettingsKey(),
        'processes.Renderer.MainThread.Frame:ptr:0xdeadbeef.Foo');
  });

  test('asyncSliceGroupStableId', function() {
    const model = new tr.Model();
    const process = model.getOrCreateProcess(123);
    const thread = process.getOrCreateThread(456);
    const group = new AsyncSliceGroup(thread);

    assert.strictEqual(process.stableId, 123);
    assert.strictEqual(thread.stableId, '123.456');
    assert.strictEqual(group.stableId,