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/CompilationUnitEditor.java
if (operation == CORRECTIONASSIST_PROPOSALS)
				return isEditable();
			return super.canDoOperation(operation);
		}
		
		/*
		 * @see TextViewer#handleDispose()
		 */
		protected void handleDispose() {
			if (fCorrectionAssistant != null) {
				fCorrectionAssistant.uninstall();
				fCorrectionAssistant= null;
			}
			super.handleDispose();
		}
		
		public void insertTextConverter(ITextConverter textConverter, int index) {
			throw new UnsupportedOperationException();
		}
		
		public void addTextConverter(ITextConverter textConverter) {
			if (fTextConverters == null) {
				fTextConverters= new ArrayList(1);
				fTextConverters.add(textConverter);
			} else if (!fTextConverters.contains(textConverter))
				fTextConverters.add(textConverter);
		}
		
		public void removeTextConverter(ITextConverter textConverter) {
			if (fTextConverters != null) {