protected function pluckMeta(Builder $query, ArgumentBag $args, $alias)
    {
        list($column, $key) = [$args->get('column'), $args->get('key')];

        $query->select("{$alias}.meta_value as {$column}");

        if (!is_null($key)) {
            $this->metaSelectListsKey($query, $key);
        }

        return $query->callParent('pluck', $args->all());
    }