How to resume the multipart upload by uploading the failure parts?

[microyahoo]

I want to use the aws sdk to implement multipart upload and resume upload. manager.NewUploader has realized the function of multipart upload which uses multiple goroutines to upload multiparts. If the file I want to upload is very large, network failure or other factors cause the upload to fail. If I set LeavePartsOnError=true, the successfully uploaded multiparts will be kept. After a while, the network is restored later, I hope to resume uploading, but it is best to skip the successfully uploaded multiparts before. How does the existing API realize this function? It would be better if you can provide a simple example, thanks!