protected void _Notify(TOut result)
{
ResultGenerated?.Invoke(PossibleResult <TOut> .Of(result));
}
protected void _Finish()
{
ResultGenerated?.Invoke(PossibleResult <TOut> .Done());
}
protected void _Err(Exception error)
{
ResultGenerated?.Invoke(PossibleResult <TOut> .Of(error));
}