---
title: "init(containerClassDescription:containerSpecifier:key:uniqueID:)"
framework: foundation
role: symbol
role_heading: Initializer
path: "foundation/nsuniqueidspecifier/init(containerclassdescription:containerspecifier:key:uniqueid:)"
---

# init(containerClassDescription:containerSpecifier:key:uniqueID:)

Returns an NSUniqueIDSpecifier object, initialized with the given arguments.

## Declaration

```swift
init(containerClassDescription classDesc: NSScriptClassDescription, containerSpecifier container: NSScriptObjectSpecifier?, key property: String, uniqueID: Any)
```

## Parameters

- `classDesc`: The class description for the new object.
- `container`: The container for the new object.
- `property`: The property for the new object.
- `uniqueID`: The unique ID for the new object. uniqueID must be an instance of NSNumber or NSString. The type should match the declared type of the attribute of the specified scriptable class whose four-character code is 'ID '.

## Return Value

Return Value An NSUniqueIDSpecifier object, initialized with the given arguments.

## Discussion

Discussion Invokes the super class’s init(containerClassDescription:containerSpecifier:key:) method and sets the ID to uniqueID.

## See Also

### Related Documentation

- [Cocoa Scripting Guide](apple-archive/documentation/Cocoa/Conceptual/ScriptableCocoaApplications/SApps_intro/SAppsIntro.html.md)