/**
  * Updates placement for each attribute in a class instance
  *
  * @since 1.2.1
  * @param eZContentClass $class class instance to update
  */
 protected function adjustClassAttributesPlacement(eZContentClass $class)
 {
     $attributes = $class->fetchAttributes();
     $class->adjustAttributePlacements($attributes);
     foreach ($attributes as $attribute) {
         $attribute->store();
     }
 }