将'set'对象转换回其queryset对象

Question

public class MyApplicationFactory : WebApplicationFactory<Startup>
{
    protected override IWebHostBuilder CreateWebHostBuilder()
    {
        return WebHost.CreateDefaultBuilder();
    }

    protected override void ConfigureWebHost(IWebHostBuilder builder)
    {
        builder.UseStartup<TestStartup>();

        base.ConfigureWebHost(builder);
    }
}

现在type（a）是“设置”对象

我想将其转换回类'django.db.models.query.QuerySet'。