# buildEither(second:) Produces content for a conditional statement in a multi-statement closure when the condition is false. ``` @export(implementation) static func buildEither(second: F) -> _ConditionalContent<_LimitedAvailabilityCompositorContent, F> where F : CompositorContent ``` ## Discussion Conditional statements in a [`CompositorContentBuilder`](/documentation/SwiftUI/CompositorContentBuilder) must contain both an `if` statement and an `else` statement, and the condition can only perform a compiler check for availability, like in the following code: ``` var body: some CompositorContent { if #available(visionOS 100, *) { MyNewContent() } else { MyOldContent() } } ``` --- 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)