public static function erase_personal_data( $email_address, $page = 1 ) {
    $items_removed = false;
    
    $number = 50;
    $page = (int) $page;

    $comments = get_comments(
      array(
        'author_email' => $email_address,
        'number'       => $number,
        'paged'        => $page,
        'order_by'     => 'comment_ID',
        'order'        => 'ASC',
      )
    );

    foreach ( (array) $comments as $comment ) {
      $comment_as_submitted = get_comment_meta( $comment->comment_ID, 'akismet_as_submitted', true );
      
      if ( $comment_as_submitted ) {
        delete_comment_meta( $comment->comment_ID, 'akismet_as_submitted' );
        $items_removed = true;
      }
    }

    // Tell core if we have more comments to work on still
    $done = count( $comments ) < $number;
    
    return array(
      'items_removed' => $items_removed,
      'items_retained' => false, // always false in this example
      'messages' => array(), // no messages in this example
      'done' => $done,
    );
  }