private function getRows($results) {
    $table = '<h3>Rows Of Data</h3>';

    if (count($results->getRows()) > 0) {
      $table .= '<table>';

      // Print headers.
      $table .= '<tr>';

      foreach ($results->getColumnHeaders() as $header) {
        $table .= '<th>' . $header->name . '</th>';
      }
      $table .= '</tr>';

      // Print table rows.
      foreach ($results->getRows() as $row) {
        $table .= '<tr>';
          foreach ($row as $cell) {
            $table .= '<td>'
                   . htmlspecialchars($cell, ENT_NOQUOTES)
                   . '</td>';
          }
        $table .= '</tr>';
      }
      $table .= '</table>';

    } else {
      $table .= '<p>No results found.</p>';
    }

    return $table;
  }