How to set Form's values interface?

From the typings, I can see that Form props are of type `FormProps from 'react-final-form'` and that extends `Config from 'final-form'`. Config accepts type generics that eventually set the type of `values` ->
```
Config {
onSubmit: (values: FormData) // ...
}
```

How can I configure the values type from within the Form itself so that I have intellisense within onSubmit and validation handlers and everywhere else where values appear?

PS: shouldn't the values here be also of `FormData`
```
validate?: (values: object)
initialValues: object
```