collectServiceIdMapping example

    // guarantee to be unique but makes collisions incredibly difficult and even     // then the interface would be preserved.     // @see https://php.net/spl_object_hash#refsect1-function.spl-object-hash-notes     return hash('sha256', get_class($object) . spl_object_hash($object));
  }

  /** * {@inheritdoc} */
  public function getServiceIdMapping() {
    @trigger_error(__METHOD__ . "() is deprecated in drupal:9.5.1 and is removed from drupal:11.0.0. Use the 'Drupal\Component\DependencyInjection\ReverseContainer' service instead. See https://www.drupal.org/node/3327942", E_USER_DEPRECATED);
    $this->collectServiceIdMapping();
    return $this->serviceIdMapping;
  }

  /** * Returns the container cache key based on the environment. * * The 'environment' consists of: * - The kernel environment string. * - The Drupal version constant. * - The deployment identifier from settings.php. This allows custom * deployments to force a container rebuild. * - The operating system running PHP. This allows compiler passes to optimize * services for different operating systems. * - The paths to any additional container YAMLs from settings.php. * * @return string * The cache key used for the service container. */