#nullable enable
using System;
using System.Runtime.InteropServices;
using System.Runtime.CompilerServices;

[assembly: PrimaryInteropAssemblyAttribute(1,1)]
[assembly: Guid("f9c2d51d-4f44-45f0-9eda-c9d599b58257")]

[ComImport()]
[Guid("f9c2d51d-4f44-45f0-9eda-c9d599b58279")]
[CoClass(typeof(ClassITest33))]
public interface ITest33 : System.Collections.IEnumerable
{
    void Add(object x);
}

[Guid("f9c2d51d-4f44-45f0-9eda-c9d599b58278")]
public abstract class ClassITest33
{
}

#nullable enable
class UsePia
{
    public void M1(ITest33 x, object? y)
    {
        x = new ITest33 { y };
    }
}