public DelayedS3Writer(S3StorageFile file, Stream innerStream, string cannedAcl, S3StorageProvider s3StorageProvider) {
     _file = file;
     _innerStream = innerStream;
     _storageProvider = s3StorageProvider;
     _cannedAcl = cannedAcl;
     _buffer = new MemoryStream();
 }
 public S3StorageFile(S3FileInfo s3FileInfo, S3StorageProvider s3StorageProvider) {
     _s3FileInfo = s3FileInfo;
     _s3StorageProvider = s3StorageProvider;
 }