protected function formatValue($format, $value)
    {
        switch ($format) {
            case 'dash':
                return $this->inflector->dasherize($value);
            case 'underscore':
                return $this->inflector->underscore($value);
            case 'studlycaps':
                return $this->inflector->studlify($value);
            case 'camelcase':
                return $this->inflector->camelize($value);
            default:
                throw new RuntimeException('Unable to format value');
        }
    }