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Function

dispatchPrecondition(condition:file:line:)

iOS 10.0+ iPadOS 10.0+ Mac Catalyst 10.0+ macOS 10.12+ tvOS 10.0+ watchOS 3.0+ 
func dispatchPrecondition(condition: @autoclosure () -> DispatchPredicate, file: StaticString = #file, line: UInt = #line)