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.ItemsForEmeralds;

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

• ItemListing

ZenScript
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new ItemsForEmeralds(item as ItemDefinition, emeraldCost as int, numberOfItems as int, villagerXp as int) as ItemsForEmeralds
new ItemsForEmeralds(<item:minecraft:diamond>, 2, 4, 2);

Parametro	Tipo	Descrizione
Parametro item	Tipo ItemDefinition	Descrizione The Item that is being sold by the villager
Parametro emeraldCost	Tipo int	Descrizione How many emeralds will be given to the villager
Parametro numberOfItems	Tipo int	Descrizione The amount of the Item being sold to the villager
Parametro villagerXp	Tipo int	Descrizione How much experience does this trade reward the villager

ZenScript
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new ItemsForEmeralds(block as Block, emeraldCost as int, numberOfItems as int, maxUses as int, villagerXp as int) as ItemsForEmeralds
new ItemsForEmeralds(<block:minecraft:dirt>, 2, 4, 8, 2);

Parametro	Tipo	Descrizione
Parametro block	Tipo Block	Descrizione The Block that is being sold by the villager
Parametro emeraldCost	Tipo int	Descrizione How many emeralds will be given to the villager
Parametro numberOfItems	Tipo int	Descrizione The amount of the Block being sold to the villager
Parametro maxUses	Tipo int	Descrizione How many times can this trade be used
Parametro villagerXp	Tipo int	Descrizione How much experience does this trade reward the villager

ZenScript
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new ItemsForEmeralds(itemStack as ItemStack, emeraldCost as int, numberOfItems as int, maxUses as int, villagerXp as int, priceMultiplier as float) as ItemsForEmeralds
new ItemsForEmeralds(<item:minecraft:diamond>, 2, 4, 8, 2, 0.05);

Parametro	Tipo	Descrizione
Parametro itemStack	Tipo ItemStack	Descrizione The Item that is being sold by the villager
Parametro emeraldCost	Tipo int	Descrizione How many emeralds will be given to the villager
Parametro numberOfItems	Tipo int	Descrizione The amount of the Item being sold to the villager
Parametro maxUses	Tipo int	Descrizione How many times can this trade be used
Parametro villagerXp	Tipo int	Descrizione How much experience does this trade reward the villager
Parametro priceMultiplier	Tipo float	Descrizione How much the price is affected by demand, Hero of the Village, and village reputation