@Override
    public String checkText(String fieldText) {
      if (!myUsedSymbolsCheckPattern.matcher(fieldText).matches()) {
        return JavaStartersBundle.message("message.allowed.symbols.for.check.artifact.simple.format");
      }
      if (!myFirstSymbolCheckPattern.matcher(fieldText).matches()) {
        return JavaStartersBundle.message("message.allows.first.symbol.for.check.artifact.simple.format");
      }
      return null;
    }
@Override
    public String checkText(String fieldText)