{% block use_class %}
use Drupal\Core\Entity\EntityTypeInterface;
{% endblock %}

/**
 * Implements hook_entity_bundle_field_info_alter().
 */
function {{module}}_entity_bundle_field_info_alter(&$fields, EntityTypeInterface $entity_type, $bundle) {
{% if bundle %}
  if ($bundle === '{{ bundle }}') {
{% endif %}
    if (isset($fields['{{ field_id }}'])) {
      // Use the ID as defined in the annotation of the constraint definition.
      $fields['{{ field_id }}']->addConstraint('{{ plugin_id }}', []);
    }
{% if bundle %}
  }
{% endif %}
}