---
title: group
framework: realitykit
role: symbol
role_heading: Instance Property
platforms: [iOS 27.0+, iPadOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: realitykit/shadergraph/nodedefinition/group
---

# group

The category this definition belongs to, or nil if uncategorized.

## Declaration

```swift
var group: String? { get }
```

## Discussion

Discussion Group names are coarse categories such as "math", "texture", or "geometric". For example, ND_atan2_float belongs to "math". Use this property to organize definitions into sections in a node picker or library browser UI.