ItemStack

This is the vanilla ItemStack. It is recommended that you use IItemStack whenever possible

They can be cast from each other, though.

Importing the class

It might be required for you to import the package if you encounter any issues (like casting an Array), so better be safe than sorry and add the import at the very top of the file.

import crafttweaker.api.item.ItemStack;

Extending CapabilityProvider<ItemStack>

ItemStack extends CapabilityProvider<ItemStack>. That means all methods available in CapabilityProvider<ItemStack> are also available in ItemStack

Casters

Methods

// ItemStack.asIIngredient() as IIngredient

myItemStack.asIIngredient();

// ItemStack.asIItemStack() as IItemStack

myItemStack.asIItemStack();