code: public ListTemplateResponse listTemplate(SmsRequest request) {
          checkNotNull(request, "object request should not be null.");
  
          InternalRequest internalRequest = this.createRequest("template", request, HttpMethodName.GET);
          return this.invokeHttpClient(internalRequest, ListTemplateResponse.class);
      }
docs: Get the list of message template
  
  @param request The request object which is empty
  @return The response object which includes all of the detail of message template,refer to
  <code>com.baidubce.services.sms.model.ListTemplateResponse</code>
  @see com.baidubce.services.sms.model.ListTemplateResponse