SwiftDocCDiffAvailabilityDiffAvailability.InfoStructureDiffAvailability.InfoAn item describing an availability change.struct InfoTopicsInitializersinit(change: String, platform: String, versions: [String])Creates a new availability change.init(from: any Decoder) throwsInstance Propertiesvar change: StringThe type of change, for example, “modified” or “added”.var platform: StringThe platform where the change occurred.var versions: [String]The target versions of the platform for this diff.