NS1004 warning, when using static wrapper class about nsubstitute.analyzers HOT 2 CLOSED

using NSubstitute;
using System;
using System.Threading;
using System.Threading.Tasks;
using MediatR;
using Xunit;

namespace MyNamespace
{
    public class FooTests
    {
        [Fact]
        public void Test()
        {
            var substitute = NSubstitute.Substitute.For<IMediator>();
            substitute.Received(1).Send(Arg.Any<GetProjectDetails.Query>());
        }
    }
}

public static class GetProjectDetails
{
    public record Query(Guid CustomerId, string ProjectNumber) : IRequest<ProjectDetailData>;

    public class Handler : IRequestHandler<Query, ProjectDetailData>
    {
        private readonly IAppDbContext context;

        public Handler(IAppDbContext context)
        {
            this.context = context;
        }

        public Task<ProjectDetailData> Handle(Query request, CancellationToken cancellationToken)
        {
            return Task.FromResult<ProjectDetailData>(null);
        }
    }
}

public interface IAppDbContext
{
}

public class ProjectDetailData
{
}