An IItemDefinition object is the direct reference to an item.
It is different from an IItemStack as this only refers to the item, it does not include any meta-information or NBT-values!

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.item.IItemDefinition;

The easiest way is from an IItemStack, but you can also get a list of all registered IItemDefinitions in the game and do something with that.

ZenScript
 Copy
//IItemStack Zengetter "definition" -> single IItemDefinition
val itemDefinition = <minecraft:stone>.definition;

//IGame zengetter "items" -> LIST!
val itemDefinitionList = game.items;

ZenGetter	역할	반환 타입
ZenGetter id	역할 Returns the item ID	반환 타입 string
ZenGetter name	역할 Returns the unlocalized item Name	반환 타입 string
ZenGetter ores	역할 Returns all ore entries containing this item. Can also contain ore entries that refer to a sub-item.	반환 타입 List<IOreDictEntry>
ZenGetter owner	역할 Returns the mod name that this item belongs to.	반환 타입 string
ZenGetter defaultInstance	역할 ​	반환 타입 IItemStack
ZenGetter creativeTab	역할 ​	반환 타입 ICreativeTab
ZenGetter creativeTabs	역할 ​	반환 타입 ICreativeTab[]
ZenGetter canItemEditBlocks	역할 ​	반환 타입 bool
ZenGetter itemEnchantability	역할 ​	반환 타입 int
ZenGetter subItems	역할 Returns a list of all subitems that are registered to this item. (like how potions have other items). This is not guaranteed to return the correct list for mods on a server.	반환 타입 List<IItemStack>

ZenSetter/ZenMethod	Parameter Type
ZenSetter/ZenMethod creativeTab	Parameter Type ICreativeTab
ZenSetter/ZenMethod setNoRepair()	Parameter Type none
ZenSetter/ZenMethod setContainerItem(IItemDefinition item)	Parameter Type IItemDefinition

• def.makeStack(meta); Creates an IItemStack with the given metadata. Metadata is an int and OPTIONAL.
• def.setHarvestLevel(String type, int level); Changes the item's harvest level to the corresponding type and level
• def.getSubItems(creativeTab); Returns a List<IItemStack> with all subitems for the given ICreativeTab. This is not guaranteed to return the correct list for mods on a server.
• def.getItemBurntime(item); Returns an int representing either -1 (Vanilla logic will apply), 0 (Not smeltable) or the items burntime