/**
  * Load add marker page template
  *
  * @since 1.0.0
  */
 public function template_add()
 {
     if (current_user_can(static::REQUIRED_CAPABILITY)) {
         $groups = LeafletLayers_Model_Admin::get_groups();
         $pepito = wp_create_nonce('add_marker');
         echo static::render_template('markers/add.php', array('page_title' => __('Add a marker', LeafletLayers::PLUGIN_ID), 'pepito' => $pepito, 'markers_groups' => $groups, 'domain' => LeafletLayers::PLUGIN_ID));
     } else {
         wp_die(__('Access denied.'));
     }
 }
 private function table_data()
 {
     return LeafletLayers_Model_Admin::get_groups();
 }