private List<FileNameMatcher> getMatchers() {
    List<FileNameMatcher> matchers = myMatchers;
    if (matchers == null) {
      matchers = ContainerUtil.map(
        getPatterns(), pattern -> FileNameMatcherFactory.getInstance().createMatcher(pattern));
      myMatchers = matchers;
    }
    return matchers;
  }
private List<FileNameMatcher> getMatchers()