drscre

package "creditcard"

// All types are implemented as interfaces. Interfaces can extend each other, thus implementing a type tree:
//                        Operation
//             _______________|_____________________   
//            |               |                     |
//        Charge             Refund             Authorize 
//       ____ |_____________________
//      |                           |
//   B2CCharge                   B2BCharge