Creates a task that retrieves the contents of a URL based on the specified URL request object.
- iOS 7.0+
- macOS 10.9+
- tvOS 9.0+
- watchOS 2.0+
An object that provides request-specific information such as the URL, cache policy, request type, and body data or body stream.
The new session data task.
By creating a task based on a request object, you can tune various aspects of the task’s behavior, including the cache policy and timeout interval.
After you create the task, you must start it by calling its