SwiftDocCAvailabilityRenderItemStructureAvailabilityRenderItemAvailability information of a symbol on a specific platform.struct AvailabilityRenderItemTopicsInitializersinit(from: any Decoder) throwsInstance Propertiesvar deprecated: String?The version of the platform SDK deprecating the symbol.var introduced: String?The version of the platform SDK introducing the symbol.var isBeta: Bool?If true, the symbol is introduced in a beta version of this platform.var message: String?A message associated with the availability of the symbol.var name: String?The name of the platform on which the symbol is available.var obsoleted: String?The version of the platform SDK marking the symbol as obsolete.var renamed: String?The new name of the symbol, if it was renamed.var unconditionallyDeprecated: Bool?If true, the symbol is deprecated on this or all platforms.var unconditionallyUnavailable: Bool?If true, the symbol is unavailable on this or all platforms.Instance Methodsfunc encode(to: any Encoder) throws