AutoFixture customizations for .net Maui

Customizations.cs

using System.Collections.ObjectModel;
using System.Collections.Specialized;
using AutoFixture.AutoMoq;
using AutoFixture;
using AutoFixture.AutoNSubstitute;
using AutoFixture.Kernel;
using AutoFixture.Xunit2;
using Objectivity.AutoFixture.XUnit2.Core.Customizations;

namespace BS.Pool.App.Tests.Customizations;

public class AutoDomainDataAttribute : AutoDataAttribute
{
    public AutoDomainDataAttribute()
        : base(() => new Fixture()
            .Customize(new AutoNSubstituteCustomization())
            .Customize(new AutoMoqCustomization())
            .Customize(new IgnoreVirtualMembersCustomization())
            .Customize(new MauiProvidersCustomization())
        )
    {
    }
}

public class MauiProvidersCustomization : ICustomization
{
    public void Customize(IFixture fixture)
    {

        fixture.Customizations.Add(
            new TypeRelay(
                typeof(Shell),
                typeof(FakeShell)));
    }
}

public class SubstituteRelay<T> : CompositeSpecimenBuilder
{
    public SubstituteRelay()
        : base(new SubstituteRelay(new ExactTypeSpecification(typeof(T))))
    {
    }
}

public class FakeShell : Page,
    IFlyoutView,
    IView,
    IElement,
    ITransform,
    IShellController,
    IPageController,
    IVisualElementController,
    IElementController,
    IPageContainer<Page>
{
    public IView Flyout { get; }
    public IView Detail { get; }
    public bool IsPresented { get; set; }
    public FlyoutBehavior FlyoutBehavior { get; }
    public double FlyoutWidth { get; }
    public bool IsGestureEnabled { get; }
    public void AddAppearanceObserver(IAppearanceObserver observer, Element pivot)
    {
        throw new NotImplementedException();
    }

    public void AddFlyoutBehaviorObserver(IFlyoutBehaviorObserver observer)
    {
        throw new NotImplementedException();
    }

    public void AppearanceChanged(Element source, bool appearanceSet)
    {
        throw new NotImplementedException();
    }

    public List<List<Element>> GenerateFlyoutGrouping()
    {
        throw new NotImplementedException();
    }

    public ShellNavigationState GetNavigationState(ShellItem shellItem, ShellSection shellSection, ShellContent shellContent,
        bool includeStack = true)
    {
        throw new NotImplementedException();
    }

    public void OnFlyoutItemSelected(Element element)
    {
        throw new NotImplementedException();
    }

    public Task OnFlyoutItemSelectedAsync(Element element)
    {
        throw new NotImplementedException();
    }

    public bool ProposeNavigation(ShellNavigationSource source, ShellItem item, ShellSection shellSection,
        ShellContent shellContent, IReadOnlyList<Page> stack, bool canCancel)
    {
        throw new NotImplementedException();
    }

    public bool RemoveAppearanceObserver(IAppearanceObserver observer)
    {
        throw new NotImplementedException();
    }

    public bool RemoveFlyoutBehaviorObserver(IFlyoutBehaviorObserver observer)
    {
        throw new NotImplementedException();
    }

    public void UpdateCurrentState(ShellNavigationSource source)
    {
        throw new NotImplementedException();
    }

    public ReadOnlyCollection<ShellItem> GetItems()
    {
        throw new NotImplementedException();
    }

    public DataTemplate GetFlyoutItemDataTemplate(BindableObject bo)
    {
        throw new NotImplementedException();
    }

    public View FlyoutHeader { get; }
    public View FlyoutFooter { get; }
    public View FlyoutContent { get; }
    public ImageSource FlyoutIcon { get; }
    public event EventHandler? StructureChanged;
    public event EventHandler? FlyoutItemsChanged;
    public event NotifyCollectionChangedEventHandler? ItemsCollectionChanged;
    public Page CurrentPage { get; } = new();
}