eca-1.0.x-dev/modules/content/eca_content.module

<?php

/**
 * @file
 * ECA Content submodule.
 */

/* @noinspection ClassConstantCanBeUsedInspection */
if (!class_exists('Drupal\Core\Field\FieldUpdateActionBase', FALSE)) {
  /* @noinspection PhpIgnoredClassAliasDeclaration */
  class_alias('Drupal\eca_content\Plugin\Action\FieldUpdateActionBase', 'Drupal\Core\Field\FieldUpdateActionBase');
}