Initializes a context with a given concurrency type.
- iOS 5.0+
- macOS 10.7+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
- Core Data
The concurrency pattern with which context will be used.
A context initialized to use the given concurrency type.
For more details on use of this method, see Concurrency.