code: public void deleteWaterMark(DeleteWaterMarkRequest request) {
          checkStringNotEmpty(request.getWatermarkId(), "The parameter watermarkId should NOT be null or empty string.");
          InternalRequest internalRequest =
                  createRequest(HttpMethodName.DELETE, request, WATER_MARK, request.getWatermarkId());
          
          invokeHttpClient(internalRequest, DeleteWaterMarkResponse.class);
      }
docs: Delete a water mark.
  
  @param request The request object containing all options for deleting water mark.