protected @NotNull List<HtmlEmbeddedContentSupport> getEmbeddedContentSupportList() {
    List<HtmlEmbeddedContentSupport> supports = new ArrayList<>();
    try {
      HtmlEmbeddedContentSupport.Companion.getContentSupports()
        .filter(support -> support.isEnabled(this))
        .forEach(supports::add);
    }
    catch (IllegalArgumentException e) {
      // Tolerate missing extension point for parser tests
    }
    supports.add(new HtmlDefaultEmbeddedContentSupport());
    return supports;
  }
protected @NotNull List<HtmlEmbeddedContentSupport> getEmbeddedContentSupportList()