code: public Optional<Iterable<String>> getLinesAsRawText(DbSession dbSession, String fileUuid, int from, int toInclusive) {
      return getLines(dbSession, fileUuid, from, toInclusive, DbFileSources.Line::getSource);
    }
docs: Returns a range of lines as raw text.
  @see #getLines(DbSession, String, int, int)