Bug 19014 Empty CU after reorg
F2 - enable single click and show in members in packages view - open TestCase.java in editor - give focus to packages view - change it on disk - copy a method in TestCase using DnD - activate the TestCase.java editor - answer question with no - activate revert from context menu observe: CU is empty
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
initializeDocument(document);
							}
							
							DocumentAdapter adapter= new DocumentAdapter(unit, document, new DefaultLineTracker(), CompilationUnitDocumentProvider.this, providerKey);
							adapter.setStatus(status);
							return adapter;
						}
						
					} catch (CoreException x) {
						handleCoreException(x, JavaUIMessages.getString("CompilationUnitDocumentProvider.problemsCreatingBuffer")); 
					}
				}
				return DocumentAdapter.NULL;
			}
		};
		
		protected static class GlobalAnnotationModelListener implements IAnnotationModelListener, IAnnotationModelListenerExtension {
			
			private ListenerList fListenerList;
			
			public GlobalAnnotationModelListener() {
				fListenerList= new ListenerList();
			}
			
			/**
			 * @see IAnnotationModelListener#modelChanged(IAnnotationModel)
			 */
			public void modelChanged(IAnnotationModel model) {
				Object[] listeners= fListenerList.getListeners();
				for (int i= 0; i < listeners.length; i++) {