namespace Microsoft.EntityFrameworkCore
{
    public abstract class ProxyGraphUpdatesTestBase<TFixture> : IClassFixture<TFixture>
        where TFixture, new(), ProxyGraphUpdatesFixtureBase!
    {
        public class Optional1
        {
            public virtual ICollection<OptionalComposite2> CompositeChildren { get; set; }
        }
    }
}