private static @NotNull String getTextBlockIndentString(String @NotNull [] lines) {
    IndentResult result = getTextBlockIndentInner(lines, true, false);
    String restorationLine = lines[result.indentLineNumber];
    return restorationLine.substring(0, result.indentSize);
  }
private static @NotNull String getTextBlockIndentString(String @NotNull [] lines)