@NotNull
  private static List<CharSequence> getNotIgnoredLineContents(int start, int end,
                                                              @NotNull CharSequence text,
                                                              @NotNull LineOffsets lineOffsets,
                                                              @NotNull BitSet ignored) {
    StringBuilder sb = new StringBuilder();
    List<CharSequence> lines = new ArrayList<>(end - start);
    for (int line = start; line < end; line++) {
      for (int offset = lineOffsets.getLineStart(line); offset < lineOffsets.getLineEnd(line); offset++) {
        if (ignored.get(offset)) continue;
        sb.append(text.charAt(offset));
      }
      lines.add(sb.toString());
      sb.setLength(0);
    }
    return lines;
  }
@NotNull
  private static List<CharSequence> getNotIgnoredLineContents(int start, int end,
                                                              @NotNull CharSequence text,
                                                              @NotNull LineOffsets lineOffsets,
                                                              @NotNull BitSet ignored)