---
title: content
framework: appkit
role: symbol
role_heading: Instance Property
path: appkit/nstreecontroller/content
---

# content

The tree controller’s content object.

## Declaration

```swift
var content: Any? { get set }
```

## Discussion

Discussion The value of this property can be an array of objects, or a single root object. The default value is nil. This property is observable using key-value observing.