Issue #3325390 by FMB: Pager seems to act on suggestions, not source strings

   */

  public function getStrings(string $langcode, array $filters, int $pager = NULL): array {

    $query = $this->connection

      ->select('l10n_server_string', 's')

      ->distinct();

      ->select('l10n_server_string', 's');

    $query

      ->leftJoin('l10n_server_status_flag', 'ts', 's.sid = ts.sid AND ts.language = :language', [

        ':language' => $langcode,

      ]);

    $query

      ->leftJoin('l10n_server_translation', 't', 'ts.sid = t.sid AND ts.language = t.language AND t.status = 1');

    // The translation table has a 1:N relationship to sources. We need to limit

    // results to unique sids. A group by on sid appears to be the fastest

    // solution (as opposed to eg. DISTINCT).

    // @note the D7 version also applied a groupBy('NULL'), but it just makes

    // the query crash.

    $query->groupBy('sid');

    $query

      ->leftJoin('users_field_data', 'u', 'u.uid = t.uid');

    $query