public static List<String> getTokens() {
    final List<String> tokens = new ArrayList<>(Arrays.asList(SqlBaseLexer.ruleNames));
    return tokens.stream().filter(pattern.asPredicate().negate()).collect(Collectors.toList());
  }
@Test
  public void shouldNeedBackQuotes() {
    List<String> tokens = GrammarTokenExporter.getTokens();

    assertEquals(expectedTokens, tokens);
  }