# Using Imported Protocol-Qualified Classes in Swift Learn how imported Objective-C protocol-qualified classes and metaclasses are represented. ## Overview Objective-C classes qualified by one or more protocols, like the one in the example below, are imported by Swift as protocol composition types. The following Objective-C property refers to a view controller that also acts a data source and delegate: ```occ @property UIViewController * myController; ``` When you import it, here’s the Swift interface: ```swift var myController: UIViewController & UITableViewDataSource & UITableViewDelegate ``` An Objective-C protocol-qualified metaclass is imported by Swift as a protocol metatype, which is a type that represents the type of a protocol itself. For example, given the following Objective-C method that performs an operation on the specified class: ```occ - (void)doSomethingForClass:(Class)codingClass; ``` When you import it, here’s the Swift interface: ```swift func doSomething(for codingClass: NSCoding.Type) ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)