/**
  * @param  FieldMappingInterface $fieldMapping
  * @param  array                 $items
  * @return array
  */
 protected function addOtherMetadataArrayItems(FieldMappingInterface $fieldMapping, array $items)
 {
     if (!$fieldMapping instanceof DecimalFieldMapping) {
         return $items;
     }
     if (null !== ($precision = $fieldMapping->getPrecision())) {
         $items[] = new ArrayItem(new LNumber($precision), new String_('precision'));
     }
     if (null !== ($scale = $fieldMapping->getScale())) {
         $items[] = new ArrayItem(new LNumber($scale), new String_('scale'));
     }
     return $items;
 }