docs: private void storeInstallationAndSetReferences(Variant variant, Installation entity) {
  
          // ensure lower case for iOS
          if (variant.getType() == VariantType.IOS) {
              entity.setDeviceToken(entity.getDeviceToken().toLowerCase());
          }
          // set reference
          entity.setVariant(variant);
          // update attached categories
          mergeCategories(entity, entity.getCategories());
          // store Installation entity
          installationDao.create(entity);
      }