#892 remove dependency to GMF

plugins/org.yakindu.sct.model.sgraph/src/org/yakindu/sct/model/sgraph/resource/AbstractSCTResource.java

@@ -135,7 +135,7 @@ public abstract class AbstractSCTResource extends XMIResourceImpl {
 
 	@Override
 	protected boolean useIDAttributes() {
-		return false;
+		return true;
 	}
 
 	@Override