CKShare.ParticipantType.unknown An unknown role. Declarationcase unknown See AlsoConstantsCKShare.ParticipantRole.ownerCKShare.ParticipantRole.privateUserCKShare.ParticipantRole.publicUserCKShare.ParticipantRole.unknownCKShare.ParticipantType.ownerCKShare.ParticipantType.privateUserCKShare.ParticipantType.publicUser