6 files declare their use of PostRequireEvent

ChangeLogger.php in core/modules/package_manager/src/EventSubscriber/ChangeLogger.php
EventLogSubscriber.php in core/modules/package_manager/tests/modules/package_manager_test_event_logger/src/EventSubscriber/EventLogSubscriber.php
StageBase.php in core/modules/package_manager/src/StageBase.php
StageBaseTest.php in core/modules/package_manager/tests/src/Kernel/StageBaseTest.php
StageEventsTest.php in core/modules/package_manager/tests/src/Kernel/StageEventsTest.php
TestSubscriber.php in core/modules/package_manager/tests/modules/package_manager_test_validation/src/EventSubscriber/TestSubscriber.php

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.