code: public boolean isLoadedDataSuccessfullyRecently() {
          final Integer timeSinceLastError = getSecondsSinceLastFailedLoad();
          final Integer timeSinceLastSuccess = getSecondsSinceLastLoad();
          if (timeSinceLastSuccess == null) {
              return false; // never loaded data, so must be FAIL
          }
          if (timeSinceLastError == null) {
              return true; // no errors ever, so must be OKAY
          }
          return lastLoadWasSuccessful;
      }
docs: useful for artifact-based healthchecks