@Override public String componentToTag(Component component, DesignContext context) { Class<?> componentClass = component.getClass(); String packageName = componentClass.getPackage().getName(); String prefix = context.getPackagePrefix(packageName); if (prefix == null) { prefix = packageName.replace('.', '_'); context.addPackagePrefix(prefix, packageName); } prefix = prefix + "-"; String className = classNameToElementName(componentClass.getSimpleName()); String tagName = prefix + className; return tagName; }