processAccessHookResults example

    // need to be done before the hook is invoked should do so by overriding     // this method.
    // We grant access to the entity if both of these conditions are met:     // - No modules say to deny access.     // - At least one module says to grant access.     $access = array_merge(
      $this->moduleHandler()->invokeAll('entity_access', [$entity, $operation, $account]),
      $this->moduleHandler()->invokeAll($entity->getEntityTypeId() . '_access', [$entity, $operation, $account])
    );

    $return = $this->processAccessHookResults($access);

    // Also execute the default access check except when the access result is     // already forbidden, as in that case, it can not be anything else.     if (!$return->isForbidden()) {
      $return = $return->orIf($this->checkAccess($entity, $operation, $account));
    }
    $result = $this->setCache($return, $cid, $operation, $langcode, $account);
    return $return_as_object ? $result : $result->isAllowed();
  }

  /** * Determines entity access. * * We grant access to the entity if both of these conditions are met: * - No modules say to deny access. * - At least one module says to grant access. * * @param \Drupal\Core\Access\AccessResultInterface[] $access * An array of access results of the fired access hook. * * @return \Drupal\Core\Access\AccessResultInterface * The combined result of the various access checks' results. All their * cacheability metadata is merged as well. * * @see \Drupal\Core\Access\AccessResultInterface::orIf() */