code: @Override
      public void updateConfigurations(String commit, Collection<String> paths) {
          Map<String, Configuration> configurationsMap = getConfigurationMap(commit, paths);
          paths.forEach(path -> notifyUpdated(configurationsMap
              .getOrDefault(path, new Configuration(path, null))));
      }
docs: Update configuration from config service
  
  @param commit commit hash, will be empty if configuration deleted
  @param paths collection of paths updated