@Contract(pure = true)
    public @NotNull Element children(@NotNull List<? extends HtmlChunk> chunks) {
      if (myChildren.isEmpty()) {
        return new Element(myTagName, myAttributes, new ArrayList<>(chunks));
      }
      List<HtmlChunk> newChildren = new ArrayList<>(myChildren.size() + chunks.size());
      newChildren.addAll(myChildren);
      newChildren.addAll(chunks);
      return new Element(myTagName, myAttributes, newChildren);
    }
@Contract(pure = true)
    public @NotNull Element children(@NotNull List<? extends HtmlChunk> chunks)