docs: public void marshall(IspPlacement ispPlacement, ProtocolMarshaller protocolMarshaller) {
  
          if (ispPlacement == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(ispPlacement.getIspName(), ISPNAME_BINDING);
              protocolMarshaller.marshall(ispPlacement.getPlacementStatistics(), PLACEMENTSTATISTICS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }