12 files declare their use of AccountSwitcherInterface

AccessPolicyProcessorTest.php in core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php
AdminAccountSwitcher.php in core/lib/Drupal/Core/DefaultContent/AdminAccountSwitcher.php
AdminAccountSwitcherTest.php in core/tests/Drupal/KernelTests/Core/DefaultContent/AdminAccountSwitcherTest.php
Cron.php in core/lib/Drupal/Core/Cron.php
CronSuspendQueueDelayTest.php in core/tests/Drupal/Tests/Core/Cron/CronSuspendQueueDelayTest.php
EntityComment.php in core/modules/comment/src/Plugin/migrate/destination/EntityComment.php
EntityContentBase.php in core/modules/migrate/src/Plugin/migrate/destination/EntityContentBase.php
EntityContentBaseTest.php in core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityContentBaseTest.php
EntityRevision.php in core/modules/migrate/src/Plugin/migrate/destination/EntityRevision.php
EntityRevisionTest.php in core/modules/migrate/tests/src/Unit/destination/EntityRevisionTest.php
EntityRevisionTest.php in core/modules/migrate/tests/src/Unit/Plugin/migrate/destination/EntityRevisionTest.php
EntityUser.php in core/modules/user/src/Plugin/migrate/destination/EntityUser.php

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