void ITreeHandleable.MakeReady(IValueContainer valueContainer, ref ValueLinkedQueue <ITreeHandleable> handleQueue, ref ValueLinkedQueue <ITreeHandleable> cancelQueue)
{
if (valueContainer.GetState() == State.Canceled)
{
valueContainer.Retain();
_valueContainer = valueContainer;
cancelQueue.Push(this);
}
else
{
Dispose();
}
}