5 * Provides test contextual link on blocks.
8 use Drupal\Core\Block\BlockPluginInterface;
11 * Implements hook_block_view_alter().
13 function contextual_test_block_view_alter(array &$build, BlockPluginInterface $block) {
14 $build['#contextual_links']['contextual_test'] = [
15 'route_parameters' => [],