LocalActionManager::getActionsForRoute

public LocalActionManager::getActionsForRoute($route_appears)

public function getActionsForRoute($route_appears) {
  if (!isset($this->instances[$route_appears])) {
    $route_names = array();
    $this->instances[$route_appears] = array();
    // @todo - optimize this lookup by compiling or caching.
    foreach ($this->getDefinitions() as $plugin_id => $action_info) {
      if (in_array($route_appears, $action_info['appears_on'])) {
        $plugin = $this->createInstance($plugin_id);
        $route_names[] = $plugin->getRouteName();
        $this->instances[$route_appears][$plugin_id] = $plugin;
      }
    }
    // Pre-fetch all the action route objects. This reduces the number of SQL
    // queries that would otherwise be triggered by the access manager.
    if (!empty($route_names)) {
      $this->routeProvider->getRoutesByNames($route_names);
    }
  }
  $links = array();
  /** @var $plugin \Drupal\Core\Menu\LocalActionInterface */
  foreach ($this->instances[$route_appears] as $plugin_id => $plugin) {
    $cacheability = new CacheableMetadata();
    $route_name = $plugin->getRouteName();
    $route_parameters = $plugin->getRouteParameters($this->routeMatch);
    $access = $this->accessManager->checkNamedRoute($route_name, $route_parameters, $this->account, TRUE);
    $links[$plugin_id] = array(
      '#theme' => 'menu_local_action',
      '#link' => array(
        'title' => $this->getTitle($plugin),
        'url' => Url::fromRoute($route_name, $route_parameters),
        'localized_options' => $plugin->getOptions($this->routeMatch),
      ),
      '#access' => $access,
      '#weight' => $plugin->getWeight(),
    );
    $cacheability->addCacheableDependency($access)->addCacheableDependency($plugin);
    $cacheability->applyTo($links[$plugin_id]);
  }
  $links['#cache']['contexts'][] = 'route';

  return $links;
}