public sealed class EffectAnnotationCollection : IEnumerable<EffectAnnotation>
{
    // Fields
    private List<EffectAnnotation> pAnnotation;
    private unsafe ID3DXBaseEffect* pEffect;

    // Methods
    internal unsafe EffectAnnotationCollection(ID3DXBaseEffect* parent, sbyte modopt(IsSignUnspecifiedByte) modopt(IsConst)* parentHandle, int count);
    private IEnumerator GetBaseEnumerator();
    public List<EffectAnnotation>.Enumerator GetEnumerator();
    private IEnumerator<EffectAnnotation> GetGenericEnumerator();
    internal unsafe void UpdateParent(ID3DXBaseEffect* parent, sbyte modopt(IsSignUnspecifiedByte) modopt(IsConst)* handle);

    // Properties
    public int Count { get; }
    public EffectAnnotation this[int index] { get; }
    public EffectAnnotation this[string name] { get; }
}