/**
 * Implements hook_comment_links_alter().
 */
function {{ machine_name }}_comment_links_alter(array &$links, CommentInterface $entity, array &$context) {
  $links['mymodule'] = [
    '#theme' => 'links__comment__mymodule',
    '#attributes' => ['class' => ['links', 'inline']],
    '#links' => [
      'comment-report' => [
        'title' => t('Report'),
        'url' => Url::fromRoute('comment_test.report', ['comment' => $entity->id()], ['query' => ['token' => \Drupal::getContainer()->get('csrf_token')->get("comment/{$entity->id()}/report")]]),
      ],
    ],
  ];
}