plugin development – Custom Product Type Not Display

I have an issue that the product is not showing on my customized product page. like this is my code:

class Booked_WC_Meta_Box_Product_Data

    $this->product_filters();
    $this->product_actions();
}

public static function setup() {
    return new self();
}

public function product_filters() {
    // add additional product type
    add_filter('product_type_options', array($this, 'product_type_options'), 10, 1);
}

public function product_actions() {
    // save the new product type meta value
    // 'woocommerce_process_product_meta_' . $product_type
    add_action('woocommerce_process_product_meta_variable', array($this, 'woocommerce_process_product_meta'), 10, 1);
    add_action('woocommerce_process_product_meta_simple', array($this, 'woocommerce_process_product_meta'), 10, 1);
}

# ------------------
# Filters
# ------------------

public function product_type_options( $options ) {
    $options('booked_appointment') = array(
        'id' => '_booked_appointment',
        'wrapper_class' => 'show_if_simple show_if_variable',
        'label' => __('Appointment Service', 'booked'),
        'description' => __('Booked Appointment products are used for Booked Payments.', 'booked'),
        'default' => 'no'
    );

    return $options;
}

# ------------------
# Actions
# ------------------

public function woocommerce_process_product_meta( $post_id ) {

    // Get types
    $is_booked_appointment = isset($_POST('_booked_appointment')) ? 'yes' : 'no';

    // Product type + Booked Appointment Service
    update_post_meta($post_id, '_booked_appointment', $is_booked_appointment);

}