Unitycontainer,子容器注入

我是Unity应用程序块的新手,在尝试实现以下功能时有点犹豫不决。我有一个父母和孩子的容器。解析子容器的新实例时,我希望使用CreateChildContainer方法将新的UnityContainer注入到构造函数中。

public class RootContainer
{
    private IUnityContainer _container;

    public RootContainer()
    {
        _container = new UnityContainer();
        _container.RegisterType<IChildContainer, ChildContainer>();
    }
}

public interface IChildContainer { }

public class ChildContainer : IChildContainer
{
    private IUnityContainer _container;

    /* I want to inject the parent.CreateChildContainer() into this constructor */
    public ChildContainer(IUnityContainer container)
    {
        _container = container;
    }
}