protected function addColumnFilters()
    {
        foreach ($this->columns as $i => $column) {
            if (static::$versionTransformer->isColumnSearched($i)) {
                $this->builder->where(
                    new raw($this->getRawColumnQuery($column)),
                    'like',
                    '%' . static::$versionTransformer->getColumnSearchValue($i) . '%'
                );
            }
        }
    }