XML import failes when there is an empty <restriction> element
|Status:||Feedback||Start date:||14 Dec 2010|
When the <restriction> element is empty, this should be implicitly mapped to a "true == true".
This is not the case since there is an error in the SymToSim XML importer.
This leads to an error when importing such in XML instance into JTorX.
I fixed this in the SymToSim code rev. 289