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.BasicItemListing;

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

• ItemListing

ZenScript
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new BasicItemListing(price as ItemStack, price2 as ItemStack, forSale as ItemStack, maxTrades as int, xp as int, priceMult as float) as BasicItemListing
new BasicItemListing(<item:minecraft:diamond>, <item:minecraft:diamond>, <item:minecraft:diamond>, 8, 2, 0.05);

Parameter	Type	Beschreibung
Parameter price	Type Artikel-Stack	Beschreibung The primary Item that is being given to the villager
Parameter price2	Type Artikel-Stack	Beschreibung The secondary item that is being given to the villager
Parameter forSale	Type Artikel-Stack	Beschreibung The Item that is being sold by the villager
Parameter maxTrades	Type int	Beschreibung How many times can this trade be used
Parameter xp	Type int	Beschreibung How much experience does this trade reward the villager
Parameter priceMult	Type float	Beschreibung How much the price is affected by demand, Hero of the Village, and village reputation