docs: public void marshall(Communication communication, ProtocolMarshaller protocolMarshaller) {
  
          if (communication == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(communication.getCaseId(), CASEID_BINDING);
              protocolMarshaller.marshall(communication.getBody(), BODY_BINDING);
              protocolMarshaller.marshall(communication.getSubmittedBy(), SUBMITTEDBY_BINDING);
              protocolMarshaller.marshall(communication.getTimeCreated(), TIMECREATED_BINDING);
              protocolMarshaller.marshall(communication.getAttachmentSet(), ATTACHMENTSET_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }