Bug 33040 No single Undo for generate delegate methods
RC 1 - JUnit setup - open TestCase - select fName - generate delegate methods for all String methods - press Ctrl+Z Observe: only one method is removed.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/OverrideMethodsAction.java
private CompilationUnitEditor fEditor;
	/**
	 * Creates a new <code>OverrideMethodsAction</code>. The action requires
	 * that the selection provided by the site's selection provider is of type <code>
	 * org.eclipse.jface.viewers.IStructuredSelection</code>.
	 * 
	 * @param site the site providing context information for this action
	 */
	public OverrideMethodsAction(IWorkbenchSite site) {
		super(site);
		setText(ActionMessages.getString("OverrideMethodsAction.label")); 
		setDescription(ActionMessages.getString("OverrideMethodsAction.description")); 
		setToolTipText(ActionMessages.getString("OverrideMethodsAction.tooltip"));