System.Reactive.Disposables.SerialDisposableValue
Represents a disposable resource whose underlying disposable resource can be replaced by another disposable resource, causing automatic disposal of the previous underlying disposable resource.
namespace System.Reactive.Disposables
{
internal struct SerialDisposableValue : ICancelable, IDisposable
{
public bool IsDisposed { get; }
public IDisposable Disposable { get; set; }
public bool TrySetFirst(IDisposable disposable);
public void Dispose();
}
}