* @param oldToNewMap the map filled with the old node-new node relation
* @return a deep clone of this {@link ATimeSingleExp} node
*/
public ATimeSingleExp clone(Map<INode,INode> oldToNewMap)
{
ATimeSingleExp node = new ATimeSingleExp(
_value,
cloneNode(_unit, oldToNewMap)
);
oldToNewMap.put(this, node);
return node;