protected @NotNull String parseOpenTagName() {
    String originalTagName;
    if (token() != XmlTokenType.XML_NAME) {
      error(XmlPsiBundle.message("xml.parsing.tag.name.expected"));
      originalTagName = "";
    }
    else {
      originalTagName = Objects.requireNonNull(myBuilder.getTokenText());
      advance();
    }
    return originalTagName;
  }
protected @NotNull String parseOpenTagName()