public async Task <UploadResponse> UploadAsync(UploadRequest request, byte[] file, CancellationToken cancellationToken)
{
var content = new ByteArrayContent(file);
content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
content.Headers.Add("Dropbox-API-Arg", request.ToString());
var response = await _httpClient.PostAsync("/2/files/upload", content, cancellationToken);
response.EnsureSuccessStatusCode();
var json = await response.Content.ReadAsStringAsync();
return(JsonConvert.DeserializeObject <UploadResponse>(json, new JsonSerializerSettings().ConfigureForDropboxApi()) !);
}
