# ITooltipFunction

## Importing the class

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
import crafttweaker.api.item.tooltip.ITooltipFunction;
```


## Methods

:::group{name=apply}

Return Type: void

```zenscript
ITooltipFunction.apply(stack as IItemStack, tooltip as stdlib.List<MCTextComponent>, isAdvanced as boolean) as void
```

| Parameter | Type | Description |
|-----------|------|-------------|
| stack | [IItemStack](/vanilla/api/items/IItemStack) | No Description Provided |
| tooltip | stdlib.List&lt;[MCTextComponent](/vanilla/api/util/text/MCTextComponent)&gt; | No Description Provided |
| isAdvanced | boolean | No Description Provided |


:::




Parameter	Type	Description
Parameter stack	Type IItemStack	Description No Description Provided
Parameter tooltip	Type stdlib.List<MCTextComponent>	Description No Description Provided
Parameter isAdvanced	Type boolean	Description No Description Provided