protected function setupExceptionHandling($value) {
        $enabled = true;                                            // default
        if (is_bool($value) || is_int($value)) {
            $enabled = (bool) $value;
        }
        elseif (is_string($value)) {
            $value   = trim(strtolower($value));
            $enabled = ($value=='0' || $value=='off' || $value=='false');
        }
        $enabled && ErrorHandler::setupExceptionHandling();
    }