Improved FileImage markup extension with pseudo-folders

FileImageMarkupExtensionV2.cs

[ContentProperty(nameof(Path))]
public class FileImageExtension : IMarkupExtension<FileImageSource>
{
    public string Path { get; set; }

    public FileImageSource ProvideValue(IServiceProvider serviceProvider) => Convert(Path);

    public static FileImageSource Convert(string path)
    {
        if (path != null)
        {
            switch (Device.RuntimePlatform)
            {
                case Device.UWP:
                    path = System.IO.Path.Combine("Assets/", path);
                    break;
                default:
                    path = path.Replace('/', '_');
                    break;
            }
            return (FileImageSource)ImageSource.FromFile(path);
        }
        throw new InvalidOperationException($"Cannot convert null into {typeof(ImageSource)}");
    }

    object IMarkupExtension.ProvideValue(IServiceProvider serviceProvider)
    {
        return ProvideValue(serviceProvider);
    }
}