Fetching IF operands

Hi,

I have this requirement of fetching the operands of the IfInstruction from
the class file,
I am looking for help on how to proceed to fetch the operand values of
IfInstructions
I could find how many operands the IfInstruction consumes
using the consumestack method
but i want to find the actual operands
can anyone guide me how to proceed

Thankyou very much