json['class'] = $this->class; } /** * An Underscore (JS) template for this control's content (but not its container). * * Class variables for this control class are available in the `data` JS object; * export custom variables by overriding {@see WP_Customize_Control::to_json()}. * * @see WP_Customize_Control::print_template() */ protected function content_template() { ?> {{{ data.label }}}