---
title: additional
framework: createml
role: symbol
role_heading: Instance Property
path: createml/mlmodelmetadata/additional
---

# additional

A dictionary that encodes key value pairs to hold additional information about the model.

## Declaration

```swift
var additional: [String : String]?
```

## See Also

### Accessing metadata

- [author](createml/mlmodelmetadata/author.md)
- [shortDescription](createml/mlmodelmetadata/shortdescription.md)
- [license](createml/mlmodelmetadata/license.md)
- [version](createml/mlmodelmetadata/version.md)