public AIRegistryPrevious AllocatePrevious(ExprPreviousNode previousNode)
{
AIRegistryPrevious service = AllocateAIRegistryPrevious();
_previous.Put(previousNode, service);
return(service);
}
public AIRegistryPrevious GetOrAllocatePrevious(ExprPreviousNode key)
{
AIRegistryPrevious existing = _previous.Get(key);
if (existing != null)
{
return(existing);
}
return(AllocatePrevious(key));
}