layout_paragraphs-1.0.x-dev/tests/modules/layout_paragraphs_entity_validator_test/layout_paragraphs_entity_validator_test.module

<?php

/**
 * @file
 * Contains layout_paragraphs_entity_validator_test.module.
 */

/**
 * Implements hook_entity_type_alter().
 */
function layout_paragraphs_entity_validator_test_entity_type_alter(array &$entity_types) {
  // Add validation constraint to the paragraph entity.
  $entity_types['paragraph']->addConstraint('LayoutParagraphsTestConstraint');
}