[Scripting Question] How to implement Ice-type Stealth Rock?

Question: I tried to implement an Ice-type version of Stealth Rock (tentatively named Icicles), but I can't find the area that ensures Icicles will do damage based on the Ice-type instead of the Rock type. Am I doing it wrong?

Use Ctrl+Shift+F and look for "Stealth Rock" and make your code accordingly.

Thank you, I didn't know that was a feature.