---
title: "init(bundleIdentifier:onInterruption:)"
framework: browserenginekit
role: symbol
role_heading: Initializer
path: "browserenginekit/webcontentprocess/init(bundleidentifier:oninterruption:)"
---

# init(bundleIdentifier:onInterruption:)

Launches a web content process asynchronously.

## Declaration

```swift
init(bundleIdentifier: String? = nil, onInterruption: @escaping () -> Void) async throws
```

## Parameters

- `bundleIdentifier`: A unique bundle identifier for the content extension, or nil to use the default web content extension bundle identifier.
- `onInterruption`: A block that the system calls if the web content extension process ends abruptly.

## Discussion

Discussion Initializing a WebContentProcess object launches a new instance of a web content extension. Control returns from this method only after the process for the new web content extension launches.

## See Also

### Creating and invalidating extension processes

- [invalidate()](browserenginekit/webcontentprocess/invalidate().md)