public async Task <Connection> AcceptConnection(Connection connection)
        {
            var result = await _repo.AcceptConnection(connection);

            var notification = new ConnectionNotification {
                User1 = connection.User2, User2 = connection.User1, Date = DateTime.Now, Read = false, Content = "accepted your request for connection"
            };

            _notificationRepo.createNotification(notification);
            return(result);
        }