/**
  * {@inheritdoc}
  */
 protected function hasAssociationConfigs(ClassMetadata $metadata, $associationName)
 {
     if ($this->isExtendField($metadata->name, $associationName)) {
         return false;
     }
     // check for default field of oneToMany or manyToMany relation
     if (strpos($associationName, ExtendConfigDumper::DEFAULT_PREFIX) === 0) {
         $guessedName = substr($associationName, strlen(ExtendConfigDumper::DEFAULT_PREFIX));
         if (!empty($guessedName) && $this->isExtendField($metadata->name, $guessedName)) {
             return false;
         }
     }
     // check for inverse side field of oneToMany relation
     $targetClass = $metadata->getAssociationTargetClass($associationName);
     $prefix = strtolower(ExtendHelper::getShortClassName($targetClass)) . '_';
     if (strpos($associationName, $prefix) === 0) {
         $guessedName = substr($associationName, strlen($prefix));
         if (!empty($guessedName) && $this->isExtendField($targetClass, $guessedName)) {
             return false;
         }
     }
     return parent::hasAssociationConfigs($metadata, $associationName);
 }