Been a while but I think it should be possible.
Why not do it the other way around:
use reflection to get a list of the Method objects, then look at each Method and find out it get
ParameterTypes? You'll get two methods, you can get the array of classes they accept then
you should be able to reverse engineer your own answer...
If you do get a solution, post some code for us all to see how to do it...
(if this doesn't work, it may allow you to get a particular 'instance' of a mthod so you can explicitly call that one)
Dave.