/**
  * Copy a file
  *
  * @param string $newFullPath The full path of the copied file
  * @return string
  */
 public function copy($newFullPath)
 {
     $contents = uFs::file_get_contents($this->fullPath);
     uFs::file_put_contents($newFullPath, $contents);
     $this->setFileName($newFullPath);
     return $newFullPath;
 }