public static void main(String[] args) {
    try {
      FSConfigToCSConfigArgumentHandler fsConfigConversionArgumentHandler =
          new FSConfigToCSConfigArgumentHandler();
      int exitCode =
          fsConfigConversionArgumentHandler.parseAndConvert(args);
      if (exitCode != 0) {
        LOG.error(FATAL,
            "Error while starting FS configuration conversion, " +
                "see previous error messages for details!");
      }

      exitFunction.accept(exitCode);
    } catch (Throwable t) {
      LOG.error(FATAL,
          "Error while starting FS configuration conversion!", t);
      exitFunction.accept(-1);
    }
  }
@Test
  public void testHelpDisplayedWithoutArgs() {
    FSConfigToCSConfigConverterMain.main(new String[] {});

    verifyHelpText();
    assertEquals("Exit code", 0, exitFunc.exitCode);
  }