/// <summary>
/// Add a callback that is invoked whenever the stream is updated.
/// </summary>
public void AddCallback(Action <TReturnType> callback)
{
stream.AddCallback((object x) => callback((TReturnType)x));
}
/// <summary>
/// Add a callback that is invoked whenever the stream is updated.
/// </summary>
public int AddCallback(Action <TReturnType> callback)
{
return(stream.AddCallback((object x) => callback((TReturnType)x)));
}