docs: public void deleteTemplate(DeleteTemplateRequest request) {
          checkNotNull(request, "object request should not be null.");
          assertStringNotNullOrEmpty(request.getTemplateId(), "object templateId should not be null or empty.");
  
          InternalRequest internalRequest =
                  this.createRequest("template", request, HttpMethodName.DELETE, request.getTemplateId());
          this.invokeHttpClient(internalRequest, SmsResponse.class);
      }