Java Security Manager completely disable reflection

I've been reading quite a lot of questions on Stackoverflow about this question but couldn't quit find a solution or answer for my problem. If there is already one I would be grateful if somebody would give a hint ...

My problem/question is if it is possible to completely disable reflection for not trustworthy code? Functions like getDeclaredMethods(). I've already got a Java Security Manager which throws Security Exceptions if the code tries to write/read/etc. ...

If it is possible, can somebody show me how?

Bruno