code: public void marshall(DescribeCasesRequest describeCasesRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (describeCasesRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(describeCasesRequest.getCaseIdList(), CASEIDLIST_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getDisplayId(), DISPLAYID_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getAfterTime(), AFTERTIME_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getBeforeTime(), BEFORETIME_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getIncludeResolvedCases(), INCLUDERESOLVEDCASES_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getNextToken(), NEXTTOKEN_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getMaxResults(), MAXRESULTS_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getLanguage(), LANGUAGE_BINDING);
              protocolMarshaller.marshall(describeCasesRequest.getIncludeCommunications(), INCLUDECOMMUNICATIONS_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }
docs: Marshall the given parameter object.