code: private static String getStringKey(String propertyKey) {
          if (WCCustomProperties.FullyQualifiedPropertiesMap.containsKey(propertyKey)) {
              return WCCustomProperties.FullyQualifiedPropertiesMap.get(propertyKey).toLowerCase();
          } else {
              return propertyKey;
          }
      }
docs: propertyKey is lowerCase value