public function init()
    {
        $this->_init();

        if ($this->id_field) {
            $this->addField($this->id_field, [
                'system'    => true,
            ]);
        }
    }
public function init()
    {
        $this->_init();

        if ($this->id_field) {
            $this->addField($this->id_field, [
                'system'    => true,
            ]);
        }
    }
public function init ( ) { $ this -> _init ( ) ; if ( $ this -> id_field ) { $ this -> addField ( $ this -> id_field , [ 'system' => true , ] ) ; } }
Extend this method to define fields of your choice.
Extend this method to define fields of your choice .