如何在JSR 177中使用APDU访问SIM卡？

J2ME provides JSR 177 which has APIs to access the SIM as a smart card. I want to explore this more and see what all I can do with this, but, I cant find any documentation with respect to that. All documentation that I have found so far is very generic and only mentions how to access a smart card with the APDU APIs and not how I can use this to do anything on the SIM. J2ME provides JSR 177 which has APIs to access