code: protected function metaSelectListsKey(Builder $query, $key)
      {
          if (strpos($key, '.') !== false) {
              return $query->addSelect($key);
          } elseif ($this->hasColumn($key)) {
              return $query->addSelect($this->getTable() . '.' . $key);
          }
  
          $alias = $this->joinMeta($query, $key);
  
          return $query->addSelect("{$alias}.meta_value as {$key}");
      }
docs: Add select clause for key of the list array.
  
  @param  \Sofa\Eloquence\Builder $query
  @param  string $key
  @return \Sofa\Eloquence\Builder