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public function getDbRows() {
  $result = $this->fetchAll(function (Select $select) {
      $select->quantifier(new Expression('SQL_CALC_FOUND_ROWS'));
  });

  $statement = $this->getAdapter()->query('SELECT FOUND_ROWS() as total');
  $resultCount = $statement->execute();
  $row = $resultCount->current();
  $total = $row['total'];

  return  [
      'result' => $result,
      'total'  => $total
  ];
}