resolving the generation of random test suites

refs 1565

org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/internal/LibraryService.java

@@ -51,7 +51,7 @@ import org.fortiss.tooling.kernel.service.base.EObjectAwareServiceBase;
  * @author ratiu
  * @author $Author: ratiu $
  * @version $Rev: 5274 $
- * @ConQAT.Rating GREEN Hash: 0EE122A2E4B8DBEADC08D23AD6F12B1D
+ * @ConQAT.Rating YELLOW Hash: C71F14128D0F2A54569DC95C1B39395C
  */
 public class LibraryService extends EObjectAwareServiceBase<ILibraryElementHandler<EObject>>
 		implements ILibraryService {
@@ -200,16 +200,21 @@ public class LibraryService extends EObjectAwareServiceBase<ILibraryElementHandl
 			return;
 		}
 
-		final ITopLevelElement topLevel = IPersistencyService.INSTANCE.getTopLevelElementFor(ref);
-		topLevel.runAsNonDirtyingCommand(new Runnable() {
-
+		Runnable cmd = new Runnable() {
 			@Override
 			public void run() {
 				ILibraryService.INSTANCE.setDirty(ref, false);
 				EObject copy = EcoreUtil.copy(lc.getWrappedElement());
 				ref.setLibraryElementShadow(copy);
 			}
-		});
+		};
+
+		final ITopLevelElement topLevel = IPersistencyService.INSTANCE.getTopLevelElementFor(ref);
+		if(topLevel != null) {
+			topLevel.runAsNonDirtyingCommand(cmd);
+		} else {
+			cmd.run();
+		}
 
 		if(!libraryElementsReferencesWithRegisteredAdapters.contains(ref)) {
 			registerChangeObserverOnLibraryElement(ref, lc);