protected void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
 {
     PlatformHelper.CallPropertyChanged(PropertyChanged, this, propertyName);
     //PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
     if (IsSeperator)
     {
         PlatformHelper.CallPropertyChanged(PropertyChanged, this, nameof(IsSeperator));
     }
 }
 protected void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
 {
     PlatformHelper.CallPropertyChanged(PropertyChanged, this, propertyName);
 }