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.

ZenScript
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import crafttweaker.api.item.enchantment.EnchantmentDefinition;

EnchantmentDefinition extends Record. That means all methods available in Record are also available in EnchantmentDefinition

Name	Type	Has Getter	Has Setter
Name anvilCost	Type int	Has Getter true	Has Setter false
Name maxCost	Type EnchantmentCost	Has Getter true	Has Setter false
Name maxLevel	Type int	Has Getter true	Has Setter false
Name minCost	Type EnchantmentCost	Has Getter true	Has Setter false
Name primaryItems	Type ItemDefinition[]	Has Getter true	Has Setter false
Name slots	Type stdlib.List<EquipmentSlotGroup>	Has Getter true	Has Setter false
Name supportedItems	Type ItemDefinition[]	Has Getter true	Has Setter false
Name weight	Type int	Has Getter true	Has Setter false