IResourceLocationSupplier

The IResourceLocationSupplier function can be used to provide the Resource Location to be used for whatever.

Importing the package

It might be required for you to import the package if you encounter any issues, so better be safe than sorry and add the import.
import mods.contenttweaker.IResourceLocationSupplier;

Parameters

The IResourceLocationSupplier Function is a function with no parameters.
The function needs to return an Resource Location.