/**
  * @param ClassMetadata $metadata
  */
 public function addClassMetadata(ClassMetadata $metadata)
 {
     $this->name = $metadata->getName();
     $this->properties = array_merge($this->properties, $metadata->getProperties());
     $this->fileResources = array_merge($this->fileResources, $metadata->getFileResources());
     if ($metadata->getCreatedAt() < $this->createdAt) {
         $this->createdAt = $metadata->getCreatedAt();
     }
 }