LambdaConverters with Avalonia UI

[alextnull]

It wasn't easy, but I found a workaround to use the existing nuget package with AvaloniaUI when compiling for non-windows platforms.
Add the following to csproj:

<ItemGroup>
  <FrameworkReference Include="Microsoft.WindowsDesktop.App.WPF" />
</ItemGroup>

<ItemGroup>
  <KnownFrameworkReference Update="Microsoft.WindowsDesktop.App.WPF" IsWindowsOnly="false" />
</ItemGroup>

<Target BeforeTargets="_CheckForTransitiveWindowsDesktopDependencies" Name="_RemoveTransitiveWPF">
  <ItemGroup>
    <TransitiveFrameworkReference Remove="Microsoft.WindowsDesktop.App.WPF" />
  </ItemGroup>
</Target>

<ItemGroup>
  <PackageReference Include="LambdaConverters" Version="4.0.0" />
</ItemGroup>

And I'm using the following extension class:

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using Avalonia.Data.Converters;

namespace LambdaConvertersAvalonia
{
    public static class LambdaConvertersExtensions
    {
        public static IValueConverter ToAvaloniaConverter(this System.Windows.Data.IValueConverter converter)
        {
            return new ValueConverterWrapper(converter);
        }

        public static IMultiValueConverter ToAvaloniaConverter(this System.Windows.Data.IMultiValueConverter converter)
        {
            return new MultiValueConverterWrapper(converter);
        }

        internal class ValueConverterWrapper : IValueConverter
        {
            private readonly System.Windows.Data.IValueConverter _converter;

            public ValueConverterWrapper(System.Windows.Data.IValueConverter converter)
            {
                _converter = converter;
            }

            public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
            {
                return _converter.Convert(value, targetType, parameter, culture);
            }

            public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
            {
                return _converter.ConvertBack(value, targetType, parameter, culture);
            }
        }

        internal class MultiValueConverterWrapper : IMultiValueConverter
        {
            private readonly System.Windows.Data.IMultiValueConverter _converter;

            public MultiValueConverterWrapper(System.Windows.Data.IMultiValueConverter converter)
            {
                _converter = converter;
            }

            public object Convert(IList<object?> values, Type targetType, object? parameter, CultureInfo culture)
            {
                return _converter.Convert(values?.ToArray(), targetType, parameter, culture);
            }
        }
    }
}