/**
  * Include the settings page classes
  */
 public static function get_settings_pages()
 {
     if (empty(self::$settings)) {
         $settings = array();
         include_once WC()->plugin_path() . '/includes/admin/settings/class-wc-settings-page.php';
         $settings[] = (include 'settings/wc-crm-settings-general.php');
         $settings[] = (include 'settings/wc-crm-settings-order-page.php');
         $settings[] = (include 'settings/wc-crm-settings-newsletter.php');
         $settings[] = (include 'settings/wc-crm-settings-statuses.php');
         self::$settings = apply_filters('wc_crm_get_settings_pages', $settings);
     }
     return self::$settings;
 }
 /**
  * Save settings
  */
 public function save()
 {
     $settings = $this->get_settings();
     WC_CRM_Admin_Settings::save_fields($settings);
 }
 public function settings()
 {
     WC_CRM_Admin_Settings::output();
 }