public CommandNode CreateNode(GameObject nodePrefab)
{
GameObject nodeObject = Instantiate(nodePrefab, background.transform);
CommandNode node = nodeObject.GetComponent <CommandNode>();
Command command = currentlyEditingProgram.CreateCommand(node.AssociatedType());
nodes.Add(node);
node.attachedCommand = command;
command.SetConnectedNode(node);
return(node);
}