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.villager.trade.type.DyedArmorForEmeralds;

DyedArmorForEmeralds implements the following interfaces. That means all methods defined in these interfaces are also available in DyedArmorForEmeralds

• ItemListing

ZenScript
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new DyedArmorForEmeralds(item as ItemDefinition, value as int) as DyedArmorForEmeralds
new DyedArmorForEmeralds(<item:minecraft:leather_chestplate>, 16);

Parameter	Type	Description
Parameter item	Type ItemDefinition	Description The Item that is being sold by the villager, dyed a random color
Parameter value	Type int	Description How many emeralds will this trade cost

ZenScript
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new DyedArmorForEmeralds(item as ItemDefinition, value as int, maxUses as int, villagerXp as int) as DyedArmorForEmeralds
new DyedArmorForEmeralds(<item:minecraft:leather_chestplate>, 16, 8, 2);

Parameter	Type	Description
Parameter item	Type ItemDefinition	Description The Item that is being sold by the villager, dyed a random color
Parameter value	Type int	Description How many emeralds will this trade cost
Parameter maxUses	Type int	Description How many times can this trade be used
Parameter villagerXp	Type int	Description How much experience does this trade reward the villager