Bug 40347 [misc] Renaming a project with an open editor fills log
I20030716+plugin-export 1) have a Java file open in the Java editor 2) rename the enclosing project -> exception in log but no stacktrace
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
/**
			 * Tells this annotation model to no longer collect temporary problems.
			 */
			private void stopCollectingProblems() {
				if (fGeneratedAnnotations != null) {
					removeAnnotations(fGeneratedAnnotations, true, true);
					fGeneratedAnnotations.clear();
				}
				fCollectedProblems= null;
				fGeneratedAnnotations= null;
			}
			
			/*
			 * @see AnnotationModel#fireModelChanged()
			 */
			protected void fireModelChanged() {
				fireModelChanged(fCurrentEvent);
				fCurrentEvent= new CompilationUnitAnnotationModelEvent(this, getResource());
			}
			
			/*
			 * @see IProblemRequestor#isActive()
			 */
			public boolean isActive() {
				return fIsActive && (fCollectedProblems != null);
			}
			
			/*
			 * @see IProblemRequestorExtension#setProgressMonitor(IProgressMonitor)
			 */