protected function replaceComposer($value) {
        $enabled = false;                                           // default
        if (is_bool($value) || is_int($value)) {
            $enabled = (bool) $value;
        }
        elseif (is_string($value)) {
            $value   = trim(strtolower($value));
            $enabled = ($value=='1' || $value=='on' || $value=='true');
        }
        if ($enabled) {
            // replace Composer
        }
    }