code: public static void addCustomTagsToProperties(Properties properties, List<Tag<?>> tags) {
      for (Tag<?> tag : tags) {
        addCustomTagToProperties(properties, tag);
      }
    }
docs: Add {@link List} of {@link Tag}s to a {@link Properties} with key {@link #METRICS_STATE_CUSTOM_TAGS}.
  <p>
  Also see {@link #addCustomTagToState(State, Tag)} , {@link #addCustomTagToProperties(Properties, Tag)}
  </p>
  
  <p>
  The {@link Properties} passed can be used to build a {@link State}.
  {@link org.apache.gobblin.metrics.Tag}s under this key can later be parsed using the method {@link #getCustomTagsFromState}.
  </p>
  
  @param properties {@link Properties} to add the tag to.
  @param tags list of {@link Tag}s to add.