# Argument

`import { Argument } from "destack:fuzz";`

Fuzz registration argument after the generator.

```ds title="Argument"
export type Argument<T> = Body<T> | Options
```

[language/library/src/fuzz/case.ds:8](https://github.com/destack-sh/destack/blob/main/language/library/src/fuzz/case.ds#L8)