An IEnchantment essentially is an IEnchantmentDefinition and an enchantment level.

Importing the package

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.
import crafttweaker.enchantments.IEnchantment;


ZenGetter ZenSetter Type
definition IEnchantmentDefinition
level int
displayName displayName String


Retrieve the Enchantment as NBT

You might want to get the Enchantment’s NBT-Tag.
You can either cast it as IData or use the method:

ench as;