code: @PostConstruct
      public void warnOnApathyKeyInMappings() {
          if (null != profileKeyForNoSelection
                  && immutableMappings.containsKey(profileKeyForNoSelection)) {
              logger.warn(
                      "Configured to treat profile key {} as apathy, "
                              + "yet also configured to map that key to profile  fname {}.  Apathy wins.  "
                              + "This is likely just fine, but it might be a misconfiguration.",
                      profileKeyForNoSelection,
                      immutableMappings.get(profileKeyForNoSelection));
          }
      }
docs: Log a warning when configured such that a profile key both means apathy and means a
  particular profile fname.