WorkbenchHelp.setHelp(fAddFrom, IJavaHelpContextIds.ADD_FROM_HISTORY_ACTION);
	public LocalHistoryActionGroup(CompilationUnitEditor editor, String groupName) {		Assert.isNotNull(groupName);		fGroupName= groupName;		fCompareWith= new JavaHistoryEditorAction(editor, new JavaCompareWithEditionAction(), 			CompareMessages.getString("LocalHistoryActionGroup.action.compare_with"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.compare_with.title"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.compare_with.message")); //$NON-NLS-1$		fReplaceWithPrevious= new JavaHistoryEditorAction(editor, new JavaReplaceWithPreviousEditionAction(), 			CompareMessages.getString("LocalHistoryActionGroup.action.replace_with_previous"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.replace_with_previous.title"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.replace_with_previous.message")); //$NON-NLS-1$		fReplaceWith= new JavaHistoryEditorAction(editor, new JavaReplaceWithEditionAction(), 			CompareMessages.getString("LocalHistoryActionGroup.action.replace_with"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.replace_with.title"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.replace_with.message")); //$NON-NLS-1$		fAddFrom= new JavaHistoryEditorAction(editor, new JavaAddElementFromHistory(), 			CompareMessages.getString("LocalHistoryActionGroup.action.add"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.add.title"), //$NON-NLS-1$			CompareMessages.getString("LocalHistoryActionGroup.action.add.message")); //$NON-NLS-1$	}