code: static public String createMonitor(String monitorUrl,
              Node parserInstruction, String modifiesResponse, TECore core) {
          MonitorCall mc = monitors.get(monitorUrl);
          mc.setCore(core);
          if (parserInstruction != null) {
              mc.setParserInstruction(DomUtils.getElement(parserInstruction));
              mc.setModifiesResponse(Boolean.parseBoolean(modifiesResponse));
          }
          LOGR.log(Level.CONFIG, "Configured monitor without test:\n {0}", mc);
          return "";
      }
docs: Monitor that doesn't trigger a test