/**
  * Move file into another parent dir.
  * Return new file path or false.
  *
  * @param  string $source source file path
  * @param $targetDir
  * @param  string $name file name
  * @return bool|string
  * @internal param string $target target dir path
  * @author Dmitry (dio) Levashov
  */
 protected function _move($source, $targetDir, $name)
 {
     $target = $this->_normpath($targetDir . '/' . $name);
     try {
         $this->dropbox->move($source, $target);
     } catch (Dropbox_Exception $e) {
         return $this->setError('Dropbox error: ' . $e->getMessage());
     }
     $this->deltaCheck();
     return $target;
 }