public void CreateUser()
        {
            string userName = "VOVA";//GenerateUserName();
            string password = "1234"; //GeneratePassword();
            SignUpAndLogin(userName, password);
        }

        public void SignUpAndLogin(string userName, string password)
        {
            var user = new ParseUser()
            {
                Username = userName,
                Password = password
            };
            Debug.Log("Registrating user " + userName);
            user.SignUpAsync().ContinueWith(task =>
            {
                if (task.IsFaulted || task.IsCanceled)
                    HandleError(task);
                else
                {
                    Debug.Log("SignUp user " + userName + " OK!");
                    LoginUser(userName, password);
                }
            });
        }

        public void LoginUser(string userName, string password)
        {
            Debug.Log("Login user " + userName);
            ParseUser.LogInAsync(userName, userName).ContinueWith(task =>
            {
                if (task.IsFaulted || task.IsCanceled)
                    HandleError(task);
                else
                    Debug.Log("Login user " + userName + " OK!");
            });
        }