I working on my mod RareMetalsRevised, and have currently hit a roadblock. Im trying to create a custom effect that makes the ore drop the ingot form of the item.
LootModifierManager is a Forge class that actually deals with the modifier loading.
https://github.com/MinecraftForge/MinecraftForge/blob/1.15.x/src/main/java/net/minecraftforge/common/loot/LootModifierManager.java