docs: static SanitizedContent create(String content, ContentKind kind) {
      checkArgument(
          kind != ContentKind.TEXT, "Use UnsanitizedString for SanitizedContent with a kind of TEXT");
      if (Flags.stringIsNotSanitizedContent()) {
        return new SanitizedContent(content, kind, kind.getDefaultDir());
      }
      return SanitizedCompatString.create(content, kind, kind.getDefaultDir());
    }