function __construct($TraceURI, $ModelName)
 {
     $this->TraceURI = $TraceURI;
     $this->ModelName = $ModelName;
     $Trace = new Trace($TraceURI);
     $this->BaseURI = $Trace->getBaseURI();
     //$this->BaseURI="http://ktbs.univ-lyon1.fr/semasema34/";
     $this->Obsels = $Trace->getObsels();
     //$TraceInfo = RestfulHelper::getInfo($TraceURI);
     //$this->BaseURI= json_decode($TraceInfo,true)['inBase'];
     //$ObselListInfo = RestfulHelper::getInfo(json_decode($TraceInfo,true)['hasObselList']);
     // $this->Obsels = json_decode($ObselListInfo,true)['obsels'];
 }