public function initialize()
 {
     if (!class_exists('App_Locations_Model')) {
         return false;
     }
     global $appointments;
     $this->_data = $appointments->options;
     if (empty($this->_data['service_locations'])) {
         $this->_data['service_locations'] = array();
     }
     $this->_locations = App_Locations_Model::get_instance();
     if (empty($this->_data['service_locations']['insert']) || 'manual' == $this->_data['service_locations']['insert']) {
         add_shortcode('app_service_location', array($this, 'process_shortcode'));
     } else {
         add_shortcode('app_service_location', '__return_false');
         add_filter('app-services-service_description', array($this, 'inject_location_markup'), 10, 3);
     }
     if (!class_exists('App_Shortcode_ServiceLocationsShortcode')) {
         require_once dirname(__FILE__) . '/lib/app_service_locations_shortcode.php';
         App_Shortcode_ServiceLocationsShortcode::serve();
         App_Shortcode_RequiredServiceLocationsShortcode::serve();
     }
 }