docs: public void marshall(Statement statement, ProtocolMarshaller protocolMarshaller) {
  
          if (statement == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(statement.getMessages(), MESSAGES_BINDING);
              protocolMarshaller.marshall(statement.getResponseCard(), RESPONSECARD_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }