/// <summary>
/// Adds the specified <see cref="WeakReference{T}"/> to this collection.
/// The <see cref="WeakReference{T}"/> itself is stored using a strong reference.
/// </summary>
/// <param name="weakRef">The <see cref="WeakReference{T}"/> to add.</param>
public void Add(WeakReference <T> weakRef)
{
if (weakRef.NullReference())
{
throw Exc.Null(nameof(weakRef));
}
//// NOTE: we are not checking whether the weak reference is still alive,
//// since the assumption is that it was recently created (e.g. by one of our other members).
this.list.Add(weakRef);
}
