QueryServices
using System.Reactive.PlatformServices;
using System.Runtime.CompilerServices;
namespace System.Reactive.Linq
{
    [System.Runtime.CompilerServices.NullableContext(1)]
    [System.Runtime.CompilerServices.Nullable(0)]
    internal static class QueryServices
    {
        private static readonly IQueryServices Services = Initialize();
        public static T GetQueryImpl<[System.Runtime.CompilerServices.Nullable(2)] T>(T defaultInstance)
        {
            return Services.Extend(defaultInstance);
        }
        private static IQueryServices Initialize()
        {
            return PlatformEnlightenmentProvider.Current.GetService<IQueryServices>(Array.Empty<object>()) ?? new DefaultQueryServices();
        }
    }
}