public function compileIp(Fluent $fluent)
    {
        $map = [
            'type'           => $fluent->type,
            'boost'          => $fluent->boost,
            'doc_values'     => $fluent->doc_values,
            'include_in_all' => $fluent->include_in_all,
            'index'          => $fluent->index,
            'null_value'     => $fluent->null_value,
            'precision_step' => $fluent->precision_step,
            'store'          => $fluent->store,
        ];

        return $this->formatMap($map);
    }