/**
  * @param int $num
  * @return string
  */
 protected function exampleEquipmentIDs($num = 1)
 {
     $Sport = $this->Factory->sport(Configuration::General()->runningSport());
     if ($Sport->mainEquipmentTypeID() > 0) {
         $IDs = $this->Factory->equipmentForEquipmentType($Sport->mainEquipmentTypeID(), true);
         if (!empty($IDs)) {
             return $IDs[0];
         }
     }
     $AllEquipments = $this->Factory->allEquipments();
     if (!empty($AllEquipments)) {
         $max = min($num, count($AllEquipments));
         $ids = array();
         for ($i = 0; $i < $max; ++$i) {
             $ids[] = $AllEquipments[$i]->id();
         }
         return implode(',', $ids);
     }
     return '';
 }