public function setEmptyText($text = null)
    {
        $this->empty_text = $text === null ? $this->default_empty_text : $text;

        return $this;
    }
public function setEmptyText($text = null)
    {
        $this->empty_text = $text === null ? $this->default_empty_text : $text;

        return $this;
    }
public function setEmptyText ( $ text = null ) { $ this -> empty_text = $ text === null ? $ this -> default_empty_text : $ text ; return $ this ; }
Sets default text which is displayed on a null-value option.

Set to "Select.." or "Pick one.."

@param string $text Pass null to use default text, empty string - disable

@return $this
Sets default text which is displayed on a null - value option .