private void AntiplagiatService_OnDocumentChecked(object sender, string documentPath, string resultPath)
        {
            if (context.PathUserId.ContainsKey(documentPath))
            {
                long userId = context.PathUserId[documentPath];
                if (resultPath == string.Empty)
                {
                    vkApi.Reply(userId, AppData.Strings.QuotaError);
                }
                else
                {
                    var uploadServer = vkApi.Docs.GetMessagesUploadServer(userId);

                    int  repeatTime = 10;
                    bool ok         = false;
                    while (!ok && repeatTime > 0)
                    {
                        repeatTime--;
                        using var wc = new WebClient();
                        try
                        {
                            var result = Encoding.ASCII.GetString(wc.UploadFile(uploadServer.UploadUrl, resultPath));
                            var docs   = vkApi.Docs.Save(result, title: Path.GetFileName(resultPath), tags: null);
                            vkApi.Messages.Send(new MessagesSendParams()
                            {
                                RandomId    = new Random().Next(),
                                UserId      = userId,
                                Message     = AppData.Strings.CheckComplete,
                                Attachments = new List <MediaAttachment> {
                                    docs.First().Instance
                                },
                            });
                        }
                        catch (Exception e)
                        {
                            ok = false;
                            System.Threading.Thread.Sleep(10000);
                        }
                        ok = true;
                    }
                }
            }
        }