docs: public void marshall(PostTextRequest postTextRequest, ProtocolMarshaller protocolMarshaller) {
  
          if (postTextRequest == null) {
              throw new SdkClientException("Invalid argument passed to marshall(...)");
          }
  
          try {
              protocolMarshaller.marshall(postTextRequest.getBotName(), BOTNAME_BINDING);
              protocolMarshaller.marshall(postTextRequest.getBotAlias(), BOTALIAS_BINDING);
              protocolMarshaller.marshall(postTextRequest.getUserId(), USERID_BINDING);
              protocolMarshaller.marshall(postTextRequest.getSessionAttributes(), SESSIONATTRIBUTES_BINDING);
              protocolMarshaller.marshall(postTextRequest.getRequestAttributes(), REQUESTATTRIBUTES_BINDING);
              protocolMarshaller.marshall(postTextRequest.getInputText(), INPUTTEXT_BINDING);
          } catch (Exception e) {
              throw new SdkClientException("Unable to marshall request to JSON: " + e.getMessage(), e);
          }
      }