File image markup extension V1

FileImageMarkupExtensionV1.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) throw new InvalidOperationException($"Cannot convert null to {typeof(ImageSource)}");
        
        if ( Device.RuntimePlatform == Device.UWP )
        {
            path = System.IO.Path.Combine("Assets/", path);
        }           
        return (FileImageSource)ImageSource.FromFile(path);        
    }

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