demo-plugin org.osivia.demo.customizer.plugin.DemoPlugin text/html demo-regions-customizer org.osivia.demo.customizer.regions.RegionsCustomizer text/html demo-attributes-customizer org.osivia.demo.customizer.attributes.AttributesCustomizer text/html demo-internationalization-customizer org.osivia.demo.customizer.internationalization.InternationalizationCustomizer text/html