AVContentKeySpecifier An object that uniquely identifies a content key. Declarationclass AVContentKeySpecifier TopicsCreating a specifierinit(forKeySystem:identifier:options:)Inspecting a specifieridentifierkeySystemoptions RelationshipsInherits FromNSObjectConforms ToCVarArgCustomDebugStringConvertibleCustomStringConvertibleEquatableHashableNSObjectProtocolSendableSendableMetatype See AlsoFairPlay streamingAVContentKeySessionAVContentKeySessionDelegateAVContentKeyAVContentKeyRequestAVPersistableContentKeyRequestAVContentKeyResponseAVExternalContentProtectionStatusAVSampleBufferAttachContentKey(_:_:_:)