code: public GetWaterMarkResponse getWaterMark(GetWaterMarkRequest request) {
          checkStringNotEmpty(request.getWatermarkId(), "The parameter watermarkId should NOT be null or empty string.");
          InternalRequest internalRequest =
                  createRequest(HttpMethodName.GET, request, WATER_MARK, request.getWatermarkId());
          
          return invokeHttpClient(internalRequest, GetWaterMarkResponse.class);
      }
docs: Get a water mark for a given water mark ID.
  
  @param request The request object containing all options for getting water mark.
  @return The information of the water mark.