@NotNull
    Set<String> allLineSeparators() {
      Set<String> result = new HashSet<>();
      if (CR_count > 0) result.add(LineSeparator.CR.getSeparatorString());
      if (LF_count > 0) result.add(LineSeparator.LF.getSeparatorString());
      if (CRLF_count > 0) result.add(LineSeparator.CRLF.getSeparatorString());
      return result;
    }
@NotNull
    Set<String> allLineSeparators()