Update for regions with empty name

plugins/org.yakindu.sct.model.sgraph/src/org/yakindu/sct/model/sgraph/naming/SGraphNameProvider.java

@@ -187,7 +187,7 @@ public class SGraphNameProvider extends DefaultDeclarativeQualifiedNameProvider
 
 	public QualifiedName qualifiedName(Region ele) {
 		QualifiedName qualifiedNameFromConverter = null;
-		if (ele.getName() == null) {
+		if (ele.getName() == null || ele.getName().isEmpty()) {
 			if (ele.eContainer() instanceof CompositeElement) {
 				CompositeElement parent = (CompositeElement) ele.eContainer();
 				int index = parent.getRegions().indexOf(ele);