code: private OpResultInfo invokeOp(final String name, final int index, final String[] args) 
        throws PrivilegedActionException
     {
        return AccessController.doPrivileged(new PrivilegedExceptionAction<OpResultInfo>()
        {
           public OpResultInfo run() throws Exception
           {
              return Server.invokeOp(name, index, args);
           }
        });
     }
docs: Invoke an operation on a MBean
  @param name The name of the bean
  @param index The operation index
  @param args The operation arguments
  @return The operation result
  @exception PrivilegedExceptionAction Thrown if the operation cannot be performed