@NotNull
  public static String convertLineSeparators(@NotNull String text,
                                             @NotNull String newSeparator,
                                             int @Nullable [] offsetsToKeep,
                                             boolean keepCarriageReturn) {
    return StringUtilRt.convertLineSeparators(text, newSeparator, offsetsToKeep, keepCarriageReturn);
  }
@NotNull
  public static String convertLineSeparators(@NotNull String text,
                                             @NotNull String newSeparator,
                                             int @Nullable [] offsetsToKeep,
                                             boolean keepCarriageReturn)