code: public static BasicTagList copyOf(Iterable<String> tags) {
      SmallTagMap.Builder builder = SmallTagMap.builder();
      for (String tag : tags) {
        builder.add(Tags.parseTag(tag));
      }
      return new BasicTagList(builder.result());
    }
docs: Returns a tag list that has a copy of {@code tags}. Each tag value
  is expected to be a string parseable using {@link BasicTag#parseTag}.