This extension type allows developers to add custom preference pages to the application Preferences dialog box.
The extension must implement the ro.sync.exml.plugin.option.OptionPagePluginExtension interface. The provided callbacks allow the developer to create the custom Swing component which will be added to the page and to react to various calls in order to persistently save the page's settings using the OptionsStorage API.
<extension type="OptionPage" class="my.package.CustomOptionPagePluginExtension"/>