Specific per-entity building.
array $build: The render array that is being created.
Drupal\Core\Entity\EntityInterface $entity: The entity to be prepared.
string $view_mode: The view mode that should be used to prepare the entity.
string $langcode: (optional) For which language the entity should be prepared, defaults to the current content language.
Overrides EntityRenderController::alterBuild
protected function alterBuild(array &$build, EntityInterface $entity, $view_mode, $langcode = NULL) {
parent::alterBuild($build, $entity, $view_mode, $langcode);
$build['#attached']['css'][] = drupal_get_path('module', 'taxonomy') . '/taxonomy.css';
}