/**
     * Obtain all uploaded files for all responses
     *
     * @access public
     *
     * @param string  $sSessionKey  Auth credentials
     * @param int     $iSurveyID    ID of the Survey
     * @param int     $sToken       Response token
     *
     * @return array On success: array containing all uploads of the specified response
     *               On failure: array with error information
     */