public void Cleanup()
    {
        var code =
            @"using System;

record class Record;
";

        benchmark.Inspect(code);
    }
    public void Cleanup()
    {
        var code =
            @"using System;

record Record();

class Class
{
	void Method(Record instance)
	{
		_ = instance is null;
		_ = instance is not null;
		_ = instance is not null;
	}
}";

        benchmark.Inspect(code);
    }