9 files declare their use of MigrateEvents

MigrateEntityContentValidationTest.php in core/modules/migrate/tests/src/Kernel/MigrateEntityContentValidationTest.php
MigrateEventsTest.php in core/modules/migrate/tests/src/Kernel/MigrateEventsTest.php
MigrateExecutable.php in core/modules/migrate/src/MigrateExecutable.php
MigrateInterruptionTest.php in core/modules/migrate/tests/src/Kernel/MigrateInterruptionTest.php
MigrateMessageTest.php in core/modules/migrate/tests/src/Kernel/MigrateMessageTest.php
MigrateUpgradeImportBatch.php in core/modules/migrate_drupal_ui/src/Batch/MigrateUpgradeImportBatch.php
NodeTranslationMigrateSubscriber.php in core/modules/node/src/EventSubscriber/NodeTranslationMigrateSubscriber.php
PluginEventSubscriber.php in core/modules/migrate/src/Plugin/PluginEventSubscriber.php
Sql.php in core/modules/migrate/src/Plugin/migrate/id_map/Sql.php

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