如果方法不可见,WCF代理如何实现ICommunicationObject？

public class MyWCFProxy : ICommunicationObject
{
    private ChannelFactory<IMyService> _channelFactory;
    private IMyService _proxy;

    public void Open()
    {
        _channelFactory = new ChannelFactory<IMyService>("MyServiceEndpoint");
        _proxy = _channelFactory.CreateChannel();
    }

    public void Close()
    {
        if (_proxy != null)
        {
            ((ICommunicationObject)_proxy).Close();
            _proxy = null;
        }

        if (_channelFactory != null)
        {
            _channelFactory.Close();
            _channelFactory = null;
        }
    }

    public void Abort()
    {
        if (_proxy != null)
        {
            ((ICommunicationObject)_proxy).Abort();
            _proxy = null;
        }

        if (_channelFactory != null)
        {
            _channelFactory.Abort();
            _channelFactory = null;
        }
    }

    // 其他代理方法
}