使用Java客户机的SpnegoContextToken的任何代码示例?

I'm trying to write Java code to be run on Windows to consume a WCF webservice that's using SpnegoContextToken. Does anyone have a good working example that they can share? I am not even sure if the current Metro (2.1) supports SpnegoContextToken. I am grateful for any advice. Thanks!!!I'm trying to write Java code to be run on Wind