Is it possible to upload more than one document a time? (API)

I have the following function that upload files to Dropbox:

private async Task<string> Upload(DropboxClient dbx, string localPath, string remotePath)
        {
            const int ChunkSize = 4096 * 1024;
            using (var fileStream = File.Open(localPath, FileMode.Open))
            {
                if (fileStream.Length <= ChunkSize)
                {
                    await dbx.Files.UploadAsync(remotePath, body: fileStream);
                    //set the expiry date
                    var settings = new SharedLinkSettings(expires: DateTime.Today.AddDays(7));
                    SharedLinkMetadata sharedLinkMetadata = await dbx.Sharing.CreateSharedLinkWithSettingsAsync(remotePath, settings);
                    return sharedLinkMetadata.Url;
                }
                else
                {
                    await this.ChunkUpload(dbx, remotePath, fileStream, ChunkSize);
                }
                return "error";
            }
 }

That works fine, but I need to upload many documents in one time and it takes long to loop through the documents and to upload them one by one, is there any option to upload a few documents at the same time?

Thanks in advance.