I have been trying to follow the examples to upload large files for onedrive from Ms Graph SDK but I cannot seem to figure out where the DriveUpload object resides or what nuget package I need to install to make this work. My code is as follows:

        public async Task<Models.CloudStorage?> UploadFileByPathAsync(MemoryStream SourceFile, string DestinationPath, string RootFolderId = "")
    {
        if(RootFolderId == "")
        {
            RootFolderId = _armsFolderId;
        }

        using var stream = SourceFile;

        // Use properties to specify the conflict behavior
        // in this case, replace

        var uploadSessionRequestBody = new DriveUpload.CreateUploadSessionPostRequestBody
        {
            Item = new DriveItemUploadableProperties
            {
                AdditionalData = new Dictionary<string, object>
                {
                    { "@microsoft.graph.conflictBehavior", "replace" },
                },
            },
        };

        // Create the upload session
        // itemPath does not need to be a path to an existing item
        var uploadSession = await _graphServiceClient.Drives[RootFolderId].Root
            .ItemWithPath(DestinationPath)
            .CreateUploadSession
            .PostAsync(uploadSessionRequestBody);


        // Max slice size must be a multiple of 320 KiB
        int maxSliceSize = 320 * 1024;
        var fileUploadTask =
            new LargeFileUploadTask<DriveItem>(uploadSession, stream, maxSliceSize);

        var totalLength = stream.Length;
        // Create a callback that is invoked after each slice is uploaded
        IProgress<long> progress = new Progress<long>(prog => {
            Console.WriteLine($"Uploaded {prog} bytes of {totalLength} bytes");
        });

        // Upload the file
        var uploadResult = await fileUploadTask.UploadAsync(progress);

        if (uploadResult.UploadSucceeded)
        {
            var response = uploadResult.ItemResponse;
            Console.WriteLine(uploadResult.UploadSucceeded ?
                $"Upload complete, item ID: {uploadResult.ItemResponse.Id}" :
                "Upload failed");
        }

    }

The error I get over the conflit behavior is:

The type or namespace name 'DriveUpload' could not be found (are you missing a using directive or an assembly reference?)

I cannot find much information online regarding where to add this. Also, I am trying to understand the performance differences between this large file upload vs the method indicated here: https://learn.microsoft.com/en-us/graph/api/driveitem-put-content?view=graph-rest-1.0&tabs=http