vendor/yajra/laravel-datatables-oracle/src/Engines/BaseEngine.php
/**
     * Add DT row index column on response.
     *
     * @return $this
     */
Add DT row index column on response.
@return $this
Add DT row index column on response . @return $this
public function addIndexColumn()
    {
        $this->columnDef['index'] = true;
        return $this;
    }
public function addIndexColumn ( ) { $ this -> columnDef [ 'index' ] = true ; return $ this ; }
Add DT row index column on response.
Add DT row index column on response .