docs: public void marshall(CreateThingRequest createThingRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (createThingRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(createThingRequest.getThingName(), THINGNAME_BINDING);
              protocolMarshaller.marshall(createThingRequest.getThingTypeName(), THINGTYPENAME_BINDING);
              protocolMarshaller.marshall(createThingRequest.getAttributePayload(), ATTRIBUTEPAYLOAD_BINDING);
              protocolMarshaller.marshall(createThingRequest.getBillingGroupName(), BILLINGGROUPNAME_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }