@Override
  public boolean isValidGroupName(String name, @NotNull RegExpGroup group) {
    for (int i = 0, length = name.length(); i < length; i++) {
      final char c = name.charAt(i);
      if (!AsciiUtil.isLetterOrDigit(c)) {
        return false;
      }
    }
    return true;
  }
@Override
  public boolean isValidGroupName(String name, @NotNull RegExpGroup group)