# Expansion for KnownTag&lt;ItemDefinition&gt;

This expansion specifically targets itemTags. It adds implicit casters to IIngredient and IData, so that you can use them wherever you can use IIngredient.

 Only downside is that if you want to use Ingredient Transformers, you will need to call `asIIngredient()` first.

## Casters

| Result Type                                                            | 암묵적  |
| ---------------------------------------------------------------------- | ---- |
| [IData](/vanilla/api/data/IData)                                       | true |
| [IIngredient](/vanilla/api/ingredient/IIngredient)                     | true |
| [IIngredientWithAmount](/vanilla/api/ingredient/IIngredientWithAmount) | true |

## Methods

:::group{name=add}

```zenscript
KnownTag.add(items as stdlib.List<IItemStack>)
```

| Parameter | Type                                                                      |
| --------- | ------------------------------------------------------------------------- |
| items     | stdlib.List&lt;[IItemStack](/vanilla/api/item/IItemStack)&gt; |


:::

:::group{name=asIData}

Return Type: [IData](/vanilla/api/data/IData)

```zenscript
// KnownTag.asIData() as IData

myKnownTag.asIData();
```

:::

:::group{name=asIIngredient}

Return Type: [IIngredient](/vanilla/api/ingredient/IIngredient)

```zenscript
// KnownTag.asIIngredient() as IIngredient

myKnownTag.asIIngredient();
```

:::

:::group{name=asIIngredientWithAmount}

Return Type: [IIngredientWithAmount](/vanilla/api/ingredient/IIngredientWithAmount)

```zenscript
// KnownTag.asIIngredientWithAmount() as IIngredientWithAmount

myKnownTag.asIIngredientWithAmount();
```

:::




Result Type	암묵적
Result Type IData	암묵적 true
Result Type IIngredient	암묵적 true
Result Type IIngredientWithAmount	암묵적 true