Iyzipay\Request::toPKIRequestString PHP Method

    public function toPKIRequestString()
    {
        return RequestStringBuilder::create()->append("locale", $this->getLocale())->append("conversationId", $this->getConversationId())->getRequestString();
    }

 public function toPKIRequestString()
 {
     return RequestStringBuilder::create()->appendSuper(parent::toPKIRequestString())->append("binNumber", $this->getBinNumber())->appendPrice("price", $this->getPrice())->getRequestString();
 }