---
title: key
framework: videotoolbox
role: symbol
role_heading: Instance Property
path: videotoolbox/vtrawprocessingsession/parameter/listparameter/key
---

# key

## Declaration

```swift
var key: String { get }
```

## See Also

### Instance Properties

- [details](videotoolbox/vtrawprocessingsession/parameter/listparameter/details.md)
- [elements](videotoolbox/vtrawprocessingsession/parameter/listparameter/elements.md)
- [values](videotoolbox/vtrawprocessingsession/parameter/listparameter/values.md)