Images for payment methods

Hi All,

I already have paypalplus integrated in my site and I have add prepayment method named “Vorauskasse” ID to [PayPal Plus integration Settings]. So now I am getting payment step by step instead of two radio buttons.
Now the problem is, I am not getting image for Vorauskasse payment method but I am getting payment-logos for paypalplus payment methods.
I tried finding out in paypalplus module but couldn`t find any related code with respect to image. Please help.