code: protected function getPaymentForm( \Aimeos\MShop\Order\Item\Iface $order, array $params )
  	{
  		$list = [];
  		$feConfig = $this->feConfig;
  
  		foreach( $feConfig as $key => $config ) {
  			$list[$key] = new \Aimeos\MW\Criteria\Attribute\Standard( $config );
  		}
  
  		$url = $this->getConfigValue( 'payment.url-self' );
  		return new \Aimeos\MShop\Common\Helper\Form\Standard( $url, 'POST', $list, false, $this->getStripeJs() );
  	}
docs: Returns the payment form for entering payment details at the shop site.
  
  @param \Aimeos\MShop\Order\Item\Iface $order Order object
  @param array $params Request parameter if available
  @return \Aimeos\MShop\Common\Helper\Form\Iface Form helper object