CloudKit CKOperation队列

Question

我必须参加CKOperations，并希望在第一次操作完成后开始第二次。我怎么能告诉＆＃34;第二个操作要等到第二个操作完成？

这是我的第一个操作（创建自定义区域）：

let operation = CKModifyRecordZonesOperation(recordZonesToSave: customZone, recordZoneIDsToDelete: nil)
    operation.modifyRecordZonesCompletionBlock = { (savedRecordZones, deletedRecordZonse, error) in
        if error != nil {
            //Creation Failed
                print("Cloud Error\n\(error?.localizedDescription)")

        } else {
            // Zone creation succeeded
                print("The 'CompanyZone' was successfully created in the private database.")
        }

    }
    privateDatabase.add(operation)

这是我的第二个操作（商店记录）：

let operation = CKModifyRecordsOperation(recordsToSave: companyRecords, recordIDsToDelete: nil)
        operation.modifyRecordsCompletionBlock = { (savedRecords, deletedRecordIDs, error) in

            if error != nil {
                print("Cloud Error\n\(error?.localizedDescription)")
            } else {
                print("Record saved successfully in the custom zone called, Company")
            }
            // savedRecords is an array of saved CKRecords
            // deletedRecordIDs is an array of the CKRecordIDs for the deleted records
        }
        privateDatabase.add(operation)