private void Stop()
        {
            // Stop command
            if (XamarinHelper.CanExecuteCommand(StopCommand))
            {
                StopCommand.Execute(null);
            }

            submitButton.Text = StartText;

            IsStarted = false;
        }
        private void Start()
        {
            // Start command
            if (_time.Minute == 0 && _time.Hour == 0)
            {
                _time = _time.AddMinutes(Step);
            }

            if (XamarinHelper.CanExecuteCommand(StartCommand, _time))
            {
                StartCommand.Execute(_time);
            }

            submitButton.Text = StopText;

            IsStarted = true;
        }