Bug 38570 Source generation wizards; Add button to open preference page
M1 The Getter/Setter wizard should offer an access to the Code Generation Preference page: Field prefix/suffix, getter/setter body content, method comment template Add delegate, constructor and override could have a button for the method comment template The code to open a preference page programatically can be copied from TodoTaskPropertyPage.showPreferencePage
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/actions/ExtractInterfaceAction.java
* 
	 * @param site the site providing context information for this action
	 */
	public ExtractInterfaceAction(IWorkbenchSite site) {
		super(site);
		setText(RefactoringMessages.getString("ExtractInterfaceAction.Extract_Interface")); 
		WorkbenchHelp.setHelp(this, IJavaHelpContextIds.EXTRACT_INTERFACE_ACTION);
	}
	
	
	
	/*
	 * @see SelectionDispatchAction#selectionChanged(IStructuredSelection)
	 */
	public void selectionChanged(IStructuredSelection selection) {
		try {
			setEnabled(canEnable(selection));
		} catch (JavaModelException e) {
			
			if (JavaModelUtil.filterNotPresentException(e))
				JavaPlugin.log(e);
			setEnabled(false);
		}
	}
	/*
	 * @see SelectionDispatchAction#run(IStructuredSelection)
	 */
	public void run(IStructuredSelection selection) {
		try {
			if (canEnable(selection))