code: public function duplicate($name)
      {
          $clone = new self($name);
          $clone->setContent($this->content);
          $clone->setChecksum($this->checksum);
          $clone->setMetadata($this->metadata);
          $clone->setMimeType($this->mimetype);
          $clone->setSize($this->size);
  
          if (null !== $this->lastAccess) {
              $clone->setLastAccess($this->lastAccess);
          }
  
          if (null !== $this->lastModification) {
              $clone->setLastModification($this->lastModification);
          }
  
          return $clone;
      }
docs: {@inheritdoc}