public function fileopsMove($fromPath, $toPath, $locale = null, $sandbox = false)
        {
            // build url
            $url = '1/fileops/move';

            // build parameters
            $parameters['from_path']    = (string) $fromPath;
            $parameters['to_path']      = (string) $toPath;
            $parameters['root']         = ($sandbox) ? 'sandbox' : 'dropbox';
            if($locale !== null) $parameters['locale'] = (string) $locale;

            // make the call
            return $this->doCall($url, $parameters, 'POST');
        }